Hiii

You have scored a pretty decent score in JEE Mains but the cutoofs for JEE Advance are yet to be released by NTA so it is not possible to predict whether you qualify for JEE Advance or not. But yes as per previous year trends, we can ssay in OBC category 82 percentile is a pretty good score to be eligible for JEE Advance.
But i would suggest before getting to any conclusion, you wait for the final result and check your approx rank as of now using the following link - https://engineering.careers360.com/jee-main-rank-predictor

In case you are not satisfied with your rank, you still have a chance for improving your score by appearing in april session. The best of the two scores would be used for further processing.

Hope this helps
Thanks!!