Minimum marks required for a sc candidate to get a rank
Score of SC Category Rank 101- 165- 45.83 %
Score of SC Category Rank 501- 122- 33.89 %
Score of SC Category Rank 1001- 104- 28.89 %
So your mark should be approximately 126.07
For sc category rank not in general..
For which examination
To know more about the colleges you get for this rank refer the link
https://engineering.careers360.com/jee-main-college-predictor