You will have to amend the 2020 tax return that was filed for the unemployment compensation exclusion. But not right now.
See this TurboTax support FAQ for information for the unemployment compensation exclusion - https://ttlc.intuit.com/community/tax-topics/help/how-do-i-claim-the-new-unemployment-benefits-in-tu...
Also see this IRS statement - https://www.irs.gov/newsroom/irs-statement-american-rescue-plan-act-of-2021
