Hi @tandon_saloni5! As you are new to the community, when you get a chance, please introduce yourself here. I’d also encourage you to add a real picture as your avatar because it helps build community!
Could you explain what tool you are using (odk-collect, odk-x survey?) That will help us give you the right answer quickly! The answer here definitely depends on what tool you are using if you want to have the software track users. The other thing you can do (I have done this) is just have all your users have user ids and have a question where they fill it in early in the form. So for example a question for enumerator name, enumerator number.
Best,
Caroline