If you’re referring to a capital loss carryover, then, in TurboTax Online:
If you don’t see 2022 TAXES in the left pane, select the dropdown to the right of Income & Expenses on the Hi, let’s keep working on your taxes! page and then select Let’s get started, Pick up where you left off, or Review/Edit.
Otherwise, in the left pane, select Federal, then Wages & Income (This is labelled Income & Expenses in TurboTax Self-Employed)
Scroll down and select the Show more dropdown to the right of Investments & Savings
Select Start or Revisit to the right of Capital Loss Carryover
Select Yes on the Do you have unused losses from prior years? screen, then select Continue
Otherwise, TurboTax will generate Schedule D when you report 1099-Bs and other capital asset sales. Those entry points would also be under the Investments and Savings banner.