How can i fill out a javascript form through automator?

Hello everyone! I need to fill out the game pin form for the website Kahoot. It is an online live quiz game. I need a script that will input the game pin for me. I am doing it at mass (20 tabs at a time) and individually opening a tab and typing or using keystrokes is way too slow. I have been input g it through the class name. The only obstacle is when I click submit Kahoot denies it. I think Kahoot has some bot protection software. If anyone has advice or is in for a project please help!!!!!