After you import the W-2 information you need to continue thru the rest of the interview until you complete all the steps in the FILE tab to actually file the return.
See this TurboTax support FAQ for taking a picture of your W-2 - https://ttlc.intuit.com/community/entering-importing/help/how-do-i-take-a-picture-of-my-w-2-in-turbotax-online/01/26732
Please be aware that TurboTax will not save images of your W-2's. Keep your W-2's for your own records. Only the data from the W-2's will be saved in the worksheets with your tax file. Someday if a lender, etc. wants a copy of the actual W-2--you need to be able to put your hands on it.
And be sure to double check the info on your tax return before you file. Sometimes it imports the picture wrong.