In 2018, under State Quota, 519 marks secured a seat in GMC, Bettiah under OBC Category. That was the cut off. This year cut offs havent been released yet. Cut offs change every year and are dependant on various factors like no.of seats available, no.of candidates appearing for the exam, top NEET score and difficulty of the exam. You can check the cut offs of GMC Bettiah and other colleges of Bihar at:

https://medicine.careers360.com/articles/neet-cutoff-bihar/amp

You can also use our College Predictor services to check your options:
https://medicine.careers360.com/neet-college-predictor?utm_source=google-search&utm_medium=paid&utm_campaign=neet-clgpd