There are no dumb questions in taxes.
You can file just your federal return in TurboTax.
If you already started a state return, you can delete it as long as
you haven't paid for it yet (or registered your free version with the
state attached).
If you plan to eventually file a state return, just not right now,
you can skip it and file only your federal return. However, if you wish
to
e-file your state, you'll be able to do so only after your e-filed federal return has been accepted.