Hey Riya, you can use following code snippet to submit a form on a webpage using Selenium Webdriver:
package submitFormPackage;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.Test;
public class submitFormTest {
@Test
public void testmethod(){
System.setProperty("webdriver.chrome.driver", "C:\\Downloads\\Drivers\\chromedriver.exe");
  WebDriver driver = new ChromeDriver();
  driver.get("https://www.uipath.com/developers/community-edition-download");
  driver.findElement(By.id("hsForm_1132b1a5-574d-4379-abe8-7c7958099d73_8644")).submit(); 
}
}