Hey Akash, you seem to have worked hard and expecting good marks. First of all you are native of Bihar, so will be categorized in state quota which is significantly high (85%). For OBC quota last year cut off for various top colleges was around 540-560. Government colleges like Jawahar nehru medical college, nalanda medical college and many more seem to have higher qualifying marks than your expected marks. You can view the following link to have an idea of cut off for bihar colleges: https://medicine.careers360.com/articles/neet-cutoff-bihar. Since government college seems to be a little difficult I would suggest you to have a look at few private colleges too; like Mata gujri memorial college, Lord buddha koshi medical college, narayana medical college, katihar medical college. I am providing this link from where you will get the list of government and medical colleges for bihar who consider NEET score: https://medicine.careers360.com/articles/bihar-mbbs-admission. I hope this will be helpful.