A 2023 W-2 cannot be entered on a 2024 tax return. You will have to amend the 2023 tax return that you filed to add the W-2.
See this TurboTax support FAQ for amending a prior year tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-change-correct-return-a...
