The 2020 federal amended tax return, Form 1040-X, cannot be e-filed using the personal editions of TurboTax it can be only be printed and mailed.
Some professional tax preparation software can e-file prior year amended returns.
The only forms that are filed with an amended return is the Form 1040-X and any federal forms and/or schedules that were actually changed by the amending along with any corrected W-2's or Form 1099's received.
The original and amended Form 1040 are Not filed nor are any worksheets or pages that are for information only.
