Hey dear, cutoff varies every year, since you are more concerned about private medical colleges, so i want to tell you that with 250 marks which is a very less score, you won't get a govt. Medical college for sure but you will definitely get a private medical college with these marks but with high fee. You can also use college predictor through this link:

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