hi,

see iits does not disclose the marks obtained by the students in iit jam exam. however you may know about the toppers percentile or score from different coaching institute. again it depends on which of the stream the candidates belongs to. iit jam exam is the entrance test of msc, integrated msc phd courses. however cutoff scores changes every year and rank varies with the number of applicants, questions difficulty level, seat matrix, students category etc.

however to achieve a decent score you have to score 80% of the total score.

hope it would help.