Dear aspirant,

According to your question and taking into consideration that you want to know about the score with respect to your percentile .

As you have 79.78 percentile and considering your shift was on 12th. I would like to say you it is impossible to predict the exact score because the quality of students are different in every shift and therefore in changes every year in every shift.

But still according to my calculations, your combined score should be around 60-70.