Leave your 1099-G entry alone, as you should have entered the 1099-G exactly as printed. Go to the very end of the "personal income" tab and click DONE, then work it through to your 2020 income summary. On that income summary screen you'll see the amount you reported for unemployment on the 1099-G. Below you'll see "Other Income or Loss" with a negative amount for your unemployment compensation. That negative amount will not exceed $10,200.
As for the forms, you'll see it labeled as "UCE" on line 8 of the SCH 1.
