I completed my 1st year B.Sc in 2020 and I have a 2-year gap. Can I continue my 2nd year course now?

For admission in the college after a gap of 1 year, you have to provide an affidavit that would be stating the reason of gapping two year. The reason may be financial or you were studying any course during that period the affidavit could easily be made through district court where you live. It also

Despite of a 2 years gap you can opt for any stream you desire. There is no such restrictions, Yes. question may arise for a gap of 2 years but that is not the factor.