SMEAT

You can use Shiksha college predictor
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Good luck.

Yes, you can easily get B.Sc seat any Degree College or University in Telangana and Andhra Pradesh, Your +2 Score is too good. You may fees concession also in some colleges, one thing you need to do is approach any college for admission as early as possible because it is already June. All the Best.

I suggest you to go with college predictor tool to know the list of colleges you are eligible to apply.
https://www.shiksha.com/b-tech/resources/kcet-college-predictor

Male students cannot get a seat in Sri Padmavati Mahila Vishwavidyalayam (Women's University) SPMVV, Tirupati, Andhra Pradesh.

You have a good score in 10+2, based on JEE Mains score it might be bit difficult to get CSE. But as you have a good pointer in 10+2, you might get a seat in CSE. You can definitely try for other branches. Best of Luck!

There is no OBC NCL category in BIT, Mesra.

https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Use the above given link.

You can contact the management and ask them that you want a seat in CSE at Amravati campus. They will provide after paying some extra fee.

Yes, if you try you will get the required seat.