Hii Harsh...

For selection in HPCET ,and the   admission in participating institute,.are offered on the basis of JEE main score ,HPCET 2019 and 10+2 marks.

As your percentage in jee main is 75.6 %..and the mark cutoff of jee main for SC  is 54...so if you clarify jee main exam ,then you are able to get direct admission .So there are clear chances you you to get select with 75.6% and SC category. 

In HPCET 50% of seat reserved for jee main ,other for HPCET exam.

Candidates have to score atleast 45% in qualifying exam and 5% relaxation for reserved category.

Cut -off for b.tech admission through jee main 2019,HPCET and 10+2:-

                  Gen category    Reserved category

JEE main .     15% .                       10%

HPCET .          20%                         15%

10+2 .             55% .                        50%

Hope it will help!!

All the best!!