You'll find the information on how to import your W2 in the TurboTax FAQ below. The FAQ also includes a list of those employers/payroll providers that partner with TurboTax for the import feature. Hope this helps!
https://ttlc.intuit.com/replies/3389204
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***