Hello student,

You have scored a decent percentile. Your JEE Main All India rank will be approx 20k - 21k.

According to  previous year cutoffs for core branch like computer science and information technology in top 10 NITs as a general category  candidate you need a percentile above 98 percentile.

But don't lose hope as percentile vs rank ratio varies year to year.

Hope it helps.

Thank you :)