If I mistakenly photographed and entered all four copies of my w2...So amount earned/owed is 4x what should be...What do I do?

You can delete the additional W-2's 

Here are the steps how to do it: 

1. Open your return. (To do this, sign in to TurboTax and click the Take me to my return button.)
2. Search for W-2 using the search in the upper right corner and then click the Jump to link in the search results.
3. This brings you to the Here's your W-2 info screen. Click the trash can icon next to the unwanted W-2 and then answer Yes on the following screen.