Hello student,

Hope you doing well, here's your answer.

With 300 marks your chance for government college is very low even if you are from obc. You need to score the 50th percentile in order to qualify the NEET UG exam. As in 300 marks, you are most likely to get private medical college easily but their fees are little bit higher. However, to get into top medical colleges, the expected cutoff is around 525 marks.

Hope this will help you.

All the best!!