Hiii

It depends completely on the cutoff and the cutoff varies year after year so it can not be predicted as such. But you can get an idea through the preious year cutoffs, as to what your target should be so that you secure your seat. For this i am providing a link, please refer to this link to get the previous year cutoff of IIT Kharagpur through GATE.
https://engineering.careers360.com/articles/gate-cutoff-for-iit-kharagpur

Thanks!