Hello

Firstly congratulations that you scored so well in your exam . First of all you have to calculate you probable rank according to your percentile .

Basically , Rank can be calculated using the below given formula

(100-your total percetile)X 869010/100

After calculating your rank you can check out the opening and closing rank criteria for each branch in each college according to you category to which you belong  .

https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches this link  will help you to know which colleges you can get.

Oy you can also try JEE mains 2020 College predictor

Best of luck !