If you used TurboTax to prepare your income tax return, TurboTax would have automatically updated your return. Log back into TurboTax and see what your new refund amount is versus your already filed income tax return refund. The difference is how much your $10,200 unemployment exemption had on your federal tax refund.
If your state has an income tax, you may need to amend your state income tax return. See Do I need to amend my state return to update my unemployment?