You can enter as many W-2s as you need to; it doesn't matter what state they are from. All your w-2s get entered on the same tax return regardless of where they came from. If you have not filed yet, search for w2, click enter, then use the Jump to w2 link. Look for the button that says + Add another W-2, see attached.
If you have already filed and your tax return was accepted and/or processed, you will need to file an amended tax return and add the w-2. How do I amend a 2018 return in TurboTax ?