Mention the college or state that you are talking about to get an exact detailed cutoff for st category. I'll talk in general the average cutoffs marks ok.. Usually cutoff ranges between 350-450 for st category in government medical colleges. The cutoff to qualify for neet too get eligible to apply for medical courses for st category in 2019 was 107 marks.

Feel free to ask questions in comments section to get a detailed information..

Best wishes. Thank you.