Dear student
At first congratulations and best wishes for your result . I am afraid to say with this marks your chances to get government colleges are almost negative through All India counselling for 15% seats despite of OBC . You can still try in state counselling for remaining 85% seats . Different state counselling cut offs vary from each other.
For different states it depend upon availability of colleges, student number etc various things . You have mentioned that you are from Bihar . You must go for your Bihar state's counselling. Though chances for you are tough for you in there also for government colleges. However you can get easily many private medical colleges.
You can further check on our link
https://medicine.careers360.com/articles/neet-cut-off-for-government-colleges
predict your chances here

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

Best Wishes.