W-2's come from your employer, and they have until January 31 to issue it. Some employers allow you to import the W-2 through the software, but for security reasons you still need information from the actual W-2 to import it. You might need to phone, drop in, email and/or snail mail an old employer to make sure they know where to send your W-2.
https://ttlc.intuit.com/questions/2561916-how-can-i-get-a-copy-of-my-w-2
https://ttlc.intuit.com/questions/1934390-how-do-i-import-my-W-2
https://ttlc.intuit.com/questions/2588751-why-can-t-i-import-my-w-2
And….SAVE YOUR OWN W-2! TURBOTAX DOES NOT SAVE IT FOR YOU. TurboTax will not have a copy of it in your account and will not have an image even if you snapped a photo. It is up to you to save it for your own records as stated on the back of the W-2.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**