I am using the free turbo tax my question is when I finish it does not allow me to enter 2020 refunded to be applies to 2021. Will this be printed as a 1040-SR form

You are completing a 2021 tax return.  You can only apply the 2021 tax refund to the 2022 taxes.

The TurboTax online editions are only for tax year 2021.  To complete a 2020 tax return you need to purchase one of the desktop editions.

To complete and file a 2020 tax return using TurboTax you would need to purchase, download and install on a personal computer one of the 2020 desktop editions from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/

A 2020 tax return can only be printed and mailed, it cannot be e-filed.

If you had a 2020 tax refund and applied it to the 2021 taxes, follow this procedure -

To enter, change or delete a refund from the prior year applied to this years taxes (Federal, State, Local) -

• Click on Federal Taxes (Personal using Home and Business)
• Click on Deductions and Credits
• Click on I'll choose what I work on (if shown)
• Scroll down to Estimates and Other Taxes Paid
• On Other Income Taxes, click on the start or update button

On the next screen select the options under 2020 Refund Applied to 2021

Or enter refund applied to this year in the Search box located in the upper right of the program screen. Click on Jump to refund applied to this year

The prior year refund amount applied is shown on Form 1040 Line 26