Hey,
For my 2nd year program, it says I have to take a science elective. I was wondering if I could take a non-science elective because I took science electives during my 1st year and could somehow use that as my 2nd year sci elective.

Thx

That would depend on your program requirements. I would recommend checking the course calendar, you did not provide the name of your program otherwise I would have gotten you the link.

If you were still unsure even after looking at your program degree requirements, I would recommend visiting an academic advisor, as you do need to provide further information for us to be able to assist you.

Check your degree audit on MUGSI.
It's what determines you meet the course requirements to graduate or not.