Hello Sanjeev 

First of all congratulations for your result.

According to last year's Neet state quota cut off you have chances to get admission in the following government Medical Colleges in Bihar:

1.Anugrah Narayan Magadh Medical College and Hospital,Gaya

2.Darbhanga Medical College,Laheriasarai

3.Government Medical College,Bettiah

4.Jawaharlal Nehru Medical College,Bhagalpur

5.Shri Krishna Medical College,Muzzafarpur

6.Vardhman Institute of Medical Sciences,Nalanda

Hope this year the SC category cut off shall goes down and you can get IGIMS or NMCH.

But you can predict your College using this link:

https://medicine.careers360.com/neet-college-predictor

So I hope you find this helpful 

Thank you 

Good luck.