You haven't mentioned your Category. Neverthless, in 2019 under State Quota, the cut offs for various Categories after Round 1 have been as follows:

Geberal Category: 599

ST: 478

SC: 417

EBC:560

BC: 582

RCG: 576

EWS: 578

However this is Round 1 cut offs and you can check the closing ranks from our article: https://medicine.careers360.com/articles/neet-cutoff-bihar . Now this is 2019 data and cut offs change every year. Cut offs change every year depending on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, top NEET score and difficulty of the exam. For a seat in NEET in Bihar, you need to score atleast 50-75 marks more than those mentioned here against your Category mentioned here.

To help you with your NEET preparation, we have NEET Knockout packages that you can check at: https://learn.careers360.com/knockout-neet-may/. To help you during admission and counselling, we have https://www.careers360.com/mbbs-companion.