hello dear,

there is no chance to get a govt. seat in Bihar with this rank because last year cutoff marks were 538 in OBC category.

check it out the last year cutoff:
https://medicine.careers360.com/articles/neet-cutoff-bihar

you can try it out college predictor:

https://medicine.careers360.com/neet-ug-college-predictor?icn=neet-clgpd&ici=qna-answer   

good luck