Hello aspirant

CEPT entrance is of 200 marks. In CEPT College rank is calculated on the basis of xii  board score and nata marks.

50% of board marks and out of 50 marks from nata is considered and total of both will be your rank. As your board score is 76.77 ,assuming it to be 77 %,. Fifty % of this will be 38.5,

Now your nata score is 132 out of 200 ie 33/50. Hence your CEPT rank will be 38.5 + 33 = 71.5

As you are from SC Category , you will definitely get a seat in CEPT College.