Instead of ‘login’ and ‘password’ use your credentials from https://app.dataforseo.com/api-access

# Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access \
login="login" 
password="password" 
cred="$(printf ${login}:${password} | base64)" 
curl --location --request POST "https://api.dataforseo.com/v3/serp/bing/organic/live/regular" \
--header "Authorization: Basic ${cred}"  \
--header "Content-Type: application/json" \
--data-raw '[
    {
        "language_code": "en",
        "location_code": 2840,
        "keyword": "albert einstein"
    }
]'

<?php
// You can download this file from here https://cdn.dataforseo.com/v3/examples/php/php_RestClient.zip
require('RestClient.php');
$api_url = 'https://api.dataforseo.com/';
try {
	// Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access
	$client = new RestClient($api_url, null, 'login', 'password');
} catch (RestClientException $e) {
	echo "\n";
	print "HTTP code: {$e->getHttpCode()}\n";
	print "Error code: {$e->getCode()}\n";
	print "Message: {$e->getMessage()}\n";
	print  $e->getTraceAsString();
	echo "\n";
	exit();
}
$post_array = array();
// You can set only one task at a time
$post_array[] = array(
	"language_code" => "en",
	"location_code" => 2840,
	"keyword" => mb_convert_encoding("albert einstein", "UTF-8")
);
try {
	// POST /v3/serp/bing/organic/live/regular
	// in addition to 'bing' and 'organic' you can also set other search engine and type parameters
	// the full list of possible parameters is available in documentation
	$result = $client->post('/v3/serp/bing/organic/live/regular', $post_array);
	print_r($result);
	// do something with post result
} catch (RestClientException $e) {
	echo "\n";
	print "HTTP code: {$e->getHttpCode()}\n";
	print "Error code: {$e->getCode()}\n";
	print "Message: {$e->getMessage()}\n";
	print  $e->getTraceAsString();
	echo "\n";
}
$client = null;
?>

from client import RestClient
# You can download this file from here https://cdn.dataforseo.com/v3/examples/python/python_Client.zip
client = RestClient("login", "password")
post_data = dict()
# You can set only one task at a time
post_data[len(post_data)] = dict(
    language_code="en",
    location_code=2840,
    keyword="albert einstein"
)
# POST /v3/serp/bing/organic/live/regular
# in addition to 'bing' and 'organic' you can also set other search engine and type parameters
# the full list of possible parameters is available in documentation
response = client.post("/v3/serp/bing/organic/live/regular", post_data)
# you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
if response["status_code"] == 20000:
    print(response)
    # do something with result
else:
    print("error. Code: %d Message: %s" % (response["status_code"], response["status_message"]))

const axios = require('axios');

axios({
    method: 'post',
    url: 'https://api.dataforseo.com/v3/serp/bing/organic/live/regular',
    auth: {
        username: 'login',
        password: 'password'
    },
    data: [{
        "keyword": encodeURI("albert einstein"),
        "language_code": "en",
        "location_code": 2840
    }],
    headers: {
        'content-type': 'application/json'
    }
}).then(function (response) {
    var result = response['data']['tasks'];
    // Result data
    console.log(result);
}).catch(function (error) {
    console.log(error);
});

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Threading.Tasks;

namespace DataForSeoDemos
{
    public static partial class Demos
    {
        public static async Task serp_live_regular()
        {
            var httpClient = new HttpClient
            {
                BaseAddress = new Uri("https://api.dataforseo.com/"),
                // Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access
                //DefaultRequestHeaders = { Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.ASCII.GetBytes("login:password"))) }
            };
            var postData = new List<object>();
            // You can set only one task at a time
            postData.Add(new
            {
                language_code = "en",
                location_code = 2840,
                keyword = "albert einstein"
            });
            // POST /v3/serp/bing/organic/live/regular
            // in addition to 'bing' and 'organic' you can also set other search engine and type parameters
            // the full list of possible parameters is available in documentation
            var taskPostResponse = await httpClient.PostAsync("/v3/serp/bing/organic/live/regular", new StringContent(JsonConvert.SerializeObject(postData)));
            var result = JsonConvert.DeserializeObject<dynamic>(await taskPostResponse.Content.ReadAsStringAsync());
            // you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
            if (result.status_code == 20000)
            {
                // do something with result
                Console.WriteLine(result);
            }
            else
                Console.WriteLine($"error. Code: {result.status_code} Message: {result.status_message}");
        }
    }
}

The above command returns JSON structured like this:

{
  "version": "0.1.20220104",
  "status_code": 20000,
  "status_message": "Ok.",
  "time": "9.1028 sec.",
  "cost": 0.003,
  "tasks_count": 1,
  "tasks_error": 0,
  "tasks": [
    {
      "id": "01041715-1535-0121-0000-032d6eeb0564",
      "status_code": 20000,
      "status_message": "Ok.",
      "time": "9.0510 sec.",
      "cost": 0.003,
      "result_count": 1,
      "path": [
        "v3",
        "serp",
        "bing",
        "organic",
        "live",
        "regular"
      ],
      "data": {
        "api": "serp",
        "function": "live",
        "se": "bing",
        "se_type": "organic",
        "language_code": "en",
        "location_code": 2840,
        "keyword": "albert einstein",
        "device": "desktop",
        "os": "windows"
      },
      "result": [
        {
          "keyword": "albert einstein",
          "type": "organic",
          "se_domain": "bing.com",
          "location_code": 2840,
          "language_code": "en",
          "check_url": "https://www.bing.com/search?q=albert%20einstein&count=50&first=1&setlang=en&cc=US&safesearch=Moderate&form=QBLH",
          "datetime": "2022-01-04 15:15:17 +00:00",
          "spell": null,
          "refinement_chips": null,
          "item_types": [
            "organic",
            "related_searches",
            "paid"
          ],
          "se_results_count": 5099,
          "pages_count": 1,
          "items_count": 103,
          "items": [
            {
              "type": "organic",
              "rank_group": 1,
              "rank_absolute": 1,
              "page": 1,
              "domain": "www.nobelprize.org",
              "title": "Albert Einstein - Biographical - NobelPrize.org",
              "description": "Albert Einstein Biographical Questions and Answers on Albert Einstein. A lbert Einstein was born at Ulm, in Württemberg, Germany, on March 14, 1879. Six weeks later the family moved to Munich, where he later on began his schooling at the Luitpold Gymnasium.",
              "url": "https://www.nobelprize.org/prizes/physics/1921/einstein/biographical/",
              "breadcrumb": "https://www.nobelprize.org/prizes/physics/1921/einstein/biographical"
            },
            {
              "type": "paid",
              "rank_group": 1,
              "rank_absolute": 100,
              "page": 1,
              "domain": "www.thriftbooks.com",
              "title": "Albert Einstein",
              "description": "20% Off Referral Discount · Books As Low As $3.59 · Browse Bestsellers · Shop +13 Million Books",
              "url": "https://www.thriftbooks.com/a/albert-einstein/203164/?mkwid=%7Cdc&pcrid=76622231541128&pkw=books&pmt=bb&slid=&product=&plc=&pgrid=1225955493531713&ptaid=dat-76622236882576:loc-190&utm_source=bing&utm_medium=cpc&utm_campaign=Bing%20%7C%20Search%20%7C%20Dynamic%20Search%20Ad%20Test&utm_term=books&utm_content=%7Cdc%7Cpcrid%7C76622231541128%7Cpkw%7Cbooks%7Cpmt%7Cbb%7Cproduct%7C%7Cslid%7C%7Cpgrid%7C1225955493531713%7Cptaid%7Cdat-76622236882576:loc-190%7C&msclkid=c4b282514bb51cde5bdee3852f30287e",
              "breadcrumb": "https://www.thriftbooks.com"
            },
            {
              "type": "related_searches",
              "rank_group": 2,
              "rank_absolute": 103,
              "page": 1,
              "items": [
                "albert einstein famous for",
                "einstein question quote",
                "albert einstein childhood story",
                "albert einstein inventions",
                "early life of albert einstein",
                "albert einstein short bio",
                "albert einstein history",
                "albert einstein's childhood life"
              ]
            }
          ]
        }
      ]
    }
  ]
}