Hello dear aspirant.
To be honest I think you will be very much aware of the fact that from this year onwards Neet JIPMER and AIIMS will be conducted in one exam. So predicting it will be a little tricky but yes anything above 650 will provide you a good chance for sure.
Hope you get it.
NEET Online Preparation
Crack NEET 2020 with NEET Knockout Program, If you Do Not Qualify- Get 100% MONEY BACK