Hello,

If you are taking the class 12th exam this year in 2021, you must indicate that you are "APPEARING" on the JEE-Main application form. If you have already passed the class 12th exam, you must indicate that you "PASSED" instead, and you must also provide information about your class 12th result, such as your score, roll number, and so on.

As per your query, You will select PASSED option during filling the qualifying exam list.

For more information, check the given link : https://engineering.careers360.com/articles/how-to-fill-jee-main-application-form

Thank You