If my employer contributes to my HSA but i didnt set anything up or contribute to it , do i put that i have a HSA or no?

Yes.  If your employer is contributing to an HSA, there is an HSA set up on your behalf.  On your W-2 Box 12, the contributions will be in code W.

Here is some information on HSAs you may find helpful: What is a health savings account (HSA)?