You can try to import your W-2. Please view the Turbo Tax FAQ below for instructions on doing so.
https://ttlc.intuit.com/replies/3389204
You can file a substitute form W-2 by using form 4852. However, you will be required to paper file your return rather than e-filing it. Please view the TurboTax FAQ below for instructions on doing so.
https://ttlc.intuit.com/replies/5451995