JEE Main

I am afraid with this percentile you will most likely be outside the cutoff. It was almost 90 last year. However, do not loose hope. You have one more chance in April to improve your percentile. Start preparing earnestly right away and I am sure you will score more than 95 percentile for a shot at CS branch.

Raw scores in JEE Mains have lost relevance since last year and what matters is percentile. I am sure you know the percentile. (100- your percentile) percent of almost 9L students are ahead of you. From this you can find as to what could be your rank. But officially, NTA will be announcing rank only after April exam.

That depends on the cut off and merit list. It goes higher every year. You will have to wait to see what stars have in store for you.

Your scores seems pretty decent I think you should be able to. Good luck.

I think you should be able to make it to the Mains. Your percentile seems decent.