You could have entered a 0 (zero) for the 2020 AGI and e-filed the 2021 tax return since the IRS does not have a 2020 AGI in their database for you.
You will need to contact TurboTax support for the state e-file charge. Use the key words Billing Issue
See this TurboTax support FAQ for contacting support - https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
