TurboTax does not have a copy of your W-2. If you need a copy of the actual W-2 you'll have to get that from the employer that issued it, or for a cost of $86 each, you can get copies from the Social Security Administration. If you just need the worksheets from the program with your W-2 information on them, then if you elect to print or save *EVERYTHING* to a PDF file, you'll find the worksheets in that PDF file.
For 2016 if you completed that year with the online version of TurboTax, then you can log into your account and download the PDF, and those worksheets will be in that PDF. Note that you must log in with the same exact account you used to prepare that 2016 return, and don't be surprised if you have to pay in order to download your information files.