Hi aspirant,

If you got 421 marks in neet you have less chance to get bams government college in Bihar. You need to score at least 450 to 500 marks to take a government seat. This information is based on previous years cutoff and the cutoff marks change every year. It's depends upon number of students that appeared in examination, number of seats available in colleges, difficulties of question paper, reservation catagory, previous years cutoff trends, etc. And this year cutoff goes very high. So more information you can use neet college predictor to know which college you may get with your marks. That is mentioned below:-

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

Hope this helpful. Best of luck.