Form 1099-G comes from the state, not from your employer. The most common reasons that you would get a 1099-G are that you received unemployment benefits or you got a state income tax refund.
Where exactly in TurboTax is it showing an amount for a 1099-G?
What exactly does it say?
What choices is it giving you?
Did you get a refund from your 2020 state tax return? Is that the amount that it's showing?