Hi Himanshu,

You haven't mentioned your category here. I am considering you of General Category.

If you get 82 marks in JEE Mains Examination then, your percentile would be around 93.27 - 93.47 percentile and your Rank would be AIR 59997 - 72147. At this much marks you will definitely qualify for JEE Advanced.

At this rank, it is difficult to get into NIT's, you can go for state level colleges.

Refer here for more info - https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches

Check out our JEE Main 2020 College Predictor - https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!