You will need the information on the W-2 to import a W-2 using TurboTax. The employer EIN, the amount in box 1 of the W-2 and the Control Number in box d of the W-2.
You must contact the employer as they are the only one who can provide the 2023 W-2.
See this TurboTax support FAQ for importing a W-2 - https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/import-enter-w-...
