Dear aspirant
At first lots of congratulations for your result and wishes for your future life. I am afraid to inform you that with your score your chances in All India  counselling are almost negative for the 15% seats  as well as your chances in state counselling 85% seats are also much low .However judging from trends of previous years you can get some of good private medical colleges in Bihar by state counselling 85 %  . Some of those colleges are

Narayan Medical College and Hospital,
SasaramMata Gujari Memorial Medical College, Kishanganj
Lord Budha Koshi Medical College and Hospital, SaharsaKatihar Medical College, Katihar
Madhubani Medical College, Madhubani

However you can check for cut offs of previous years here
https://medicine.careers360.com/articles/neet-cut-off
You can predict your chances here
https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer
Best wishes.