Hey,

Since I can't tell you accurately about the exact cut-off marks of this year due to unavailability of the officially released cut-off details of NEET UG exam 2020, I want to suggest you to be gone through the previous year's details minutely of several Government MBBS and BDS colleges of different states through the Careers360 link given below:

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

After analysing this article and cut-off details provided prominently,I think it's crystal clear for you also that despite being student of SC cateogory your percentile and marks are not sufficient for getting admission in any kind of Government MBBS and BDS colleges in any state.

Now I'll recommended you that if you've intense passion and dedication to be an eminent doctor in future, just go for a second attempt in next year with the best level of preparation from your side. Because belonging to SC cateogory is undoubtedly a huge advantage for you, so if you can secure atleast 80-90 more marks ( i.e. almost 440-50 marks) in your next attempt, you'll have enough possibilities to get admission in the topmost Government colleges in different states.

However think about it.  You can also predict your admission chances for this year by Careers360 NEET college predictor tool :

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

Wish you all the best. Think before you make any final decision in this context.