Hey,

Nothing fixed can be said until NEET 2021 results come out. Cut offs and ranks are subject to change every year depending on the difficulty level of the paper, the performance of the students and the number of seats available.

Having said that, based on previous year data with 515 marks you may get a rank between 83522-91757. You can also predict your rank using NEET Rank Predictor

Since you did not mention your category, I am assuming you are from general category. Last year the cut off marks for Army College of Medical Sciences was around 550. So based on this, it is quite difficult for you to get a seat in this college. However, you can get management quota seats in deemed universities like Sri Ramachandra Institute of Medical Sciences, JSS Medical College. To know more about the colleges in which you can get MBBS/BDS seats, you can use NEET College Predictor https://medicine.careers360.com/neet-college-predictor