Vehicle depreciation from the 2023 Federal tax return will not be found if you are not using the same Intuit account that was used for 2023 Federal tax reporting.
In TurboTax Online, click Tax Home in the upper left hand corner of the screen. Then click the down arrow to the right of Your tax returns & documents to see whether the account was used to file your 2023 Federal tax return. See this TurboTax Help to recover an Intuit account.
Rather than report vehicle depreciation on your 2023 Federal tax return, did you elect the standard mileage rate? Use of the standard mileage rate would not report a depreciation amount on the 2023 Federal tax return. See this TurboTax Help.