If I have a w2 that’s under 100$ should I still file it

Yes.   Every 2023 W-2 must be entered on your 2023 tax return, even if they are for small amounts.    All o of your W-2's go on the SAME tax return.

Yes, all 2023 forms W2 should be entered into TurboTax.  Use the "Wages & Income" section the "Job(W2)" topic.  The IRS has received the forms W2 from your employers and is looking to reconcile those with your tax return entries.