Hello Ankur,

JEE-Main 2020 application process has been closed for second attempt also so now you have to wait for next year. As you asked, details on JEE-Main application form should be in accordance with Marksheet of  class 10th, and admit card of class 12th if you did not got the result of your 12th board exams.

For more details about JEE-Main you should read this article .

I hope this answer helps you.