Hi Rajeev

621 is really good score, you have decent chances of getting seat in good medical college

With this score and category, colleges in Bihar that you have shot :

1. Anugrah Narayan Medical college (cut off score 582)

2. Darbanga medical college (cut off 591)

3. Government medical college (cut off 571)

4. Indira Gandhi Institute of medical sciences(cut off 604)

5. Jawaharlal medical college (cut off 589)

Note:- This prediction is according to previous year's cut off, although cut off varies every year depending upon no of seats available, last year's trends, difficulty level of exam and so on.

But you still have good chances of getting seat.

For more information, check this out

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

Good luck