You have understood something wrong SC students also scores very high marks even in 2017 the highest scorer kalpit veerwal was also , who scored full marks that is 360 out of 360 so there is not any relation between the marks and the category of the students, student can score any marks therefore don't bother about the category just focus on studies you are category does not tell you how much you can I score or are same in the call you can you score as much as you do your preparation.