Hello student,

Candidates must have scored at least 55% aggregate marks (50% for SC/ST, OBC- NCL, PwD) in Master's Degree or equivalent examination from university recognized by UGC in Humanities (including languages) and Social Science, Computer Science and Applications, Electronic Science and others to be eligible for UGC NET 2019.

Yes, of course you can sit in SET BBA 2020 if you have passed 12th board successfully. Every institute has its own marks cutoff. So, please check this link for the same: https://bschool.careers360.com/articles/set-bba-eligibility-criteria
   for more info, https://bschool.careers360.com/articles/set-bba