Hello,
For open category student the neet cutoff for government medical colleges to get mbbs seat is around 550+

However the information is based on previous years cutoff patterns and as every year the cutoff changes every year depending on various factors like difficulty level of the exam questions , number of candidates appearing and the recent COVID19 crisis etc.

You can use careers360 college predictor to know the colleges you can get at your NEET score;- https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

Hope this helps