I know you don't have a 1099-B, but this will get you to the right place in TurboTax. In the Search box type 1099-b, then click the link that says "Jump to 1099-b." That will take you to a screen that asks "Did you sell any investments in 2020?" Click Yes, and the next screen will ask whether you got a 1099-B. Click No and proceed from there to report the sales.
