If you already filed and didn't get the 10,200 unemployment exclusion you do not need to amend. The IRS will be adjusting it for you. See,
https://www.irs.gov/newsroom/irs-to-recalculate-taxes-on-unemployment-benefits-refunds-to-start-in-m...
You can log back into your return and it should automatically update your return and show you the new refund. But the updated return won't be sent. The IRS will adjust it for you.
If you have unemployment you can exclude up to 10,200 if your income is under $150,000. The exclusion will be on Schedule 1 Line 8 as a negative number. Your unemployment compensation will be on Line 7 of Schedule 1. The result flows to Form 1040 Line 8.
