Hii tanveer,
Cbse has not declared jee mains top percentile yet. It has to be declared very soon.
You can however previous 3 years top 20 percentile at
Https://josaa.nic.in/webinfocms/Handler/FileHandler.ashx?i=File&ii=86&iii=Y
Good luck...
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile