Hello
raushan.choudhary12234 , On the basis of previous year data for bihar state quota in mbbs there is 480 marks is needed but on previous year data because this year 2020 cutoff list is not released yet but if you want to know the expected marks for government colleges in NEET 2020 then you can visit careers 360 neet cutoff page here:

https://medicine.careers360.com/articles/neet-cut-off

Hope it will be helpful for you :)