Hello,

Gap certificate or Gap Affidavit is your declaration on the non-judicial stamp paper stating the reason for taking gap and declaration that you did not take admission to any other college, university or courses during the gap year. You can buy stamp certificates from any notary, sub-registrar offices, courts.

But i don't think NEET examination candidate have required for GAP certificate. But if they are mentioned application for GAP certificate theb you have to collect this. It may be take 2 or 3 buisness days.

All the best.