I became a self employed contract worker in 2020. Can I deduct my $120 2020 TurboTax for Self Employed fee now? or must I wait until 2021?

Since you will be paying the fee in 2021 it will be entered on your 2021 Schedule C that you file next year as a Miscellaneous expense

That's what I suspected! Thank you for taking the time to reply to my rookie question, @DoninGA