No matter what happened ... if you have not received your payment by January 25, 2021 you will just claim the credit on the 2020 return by answering the 2 questions about the stimulus payments that will appear at the end of the TurboTax interview.
The questions are in the section Federal Review.
Once the information is entered you will see your refund increase or balance due decrease, and TurboTax will enter the amount of the credit on Line 30 of Form 1040 for you.
