I am expecting 615 marks in neet 2021 and OBC category Uttar pradesh. Which government collages I can get and expected neet AIR.

Hello aspirant
Hope you are doing well
It is difficult to predict the cut off marks or ranks but according to previous year trends your expected rank would lie between 14766 - 18807 but it may vary every year depending on the following factors
1. Level of question paper
2. Total no of candidates
3. Category of candidate
4. Total no of seats
5. Marks obtained by students
Here is the link for the expected marks vs ranks
https://medicine.careers360.com/articles/neet-result-marks-vs-rank
According to previous years the cutoff marks for government college in up colleges are as follows :
1. Autonomous State Medical College, Basti - 607 marks
2. Government Medical College, Badaun -609 marks
3. Government Medical College, Jalaun - 611 marks
4. King George's Medical University, Lucknow- 649
5. State Medical College, Shahjahanpur- 607 marks

And 606 iis the last cut off marks for OBC category and it was for Autonomous State Medical College and Associated Teaching Hospital, Bahraich
So you have chances to get seat in government mbbs medical colleges.
https://medicine.careers360.com/articles/neet-cutoff-up
You can use college predictor tool to know about the colleges you can get
https://medicine.careers360.com/neet-college-predictor

Good luck
Hope it helps