I took an advance pay in June of 2019 for my military move and have to pay it back over 12 months. This was calculated in my W2. How do I claim this?

Advance pay is already included as part of your wages in box 1 of your W2 and taxes have been withheld in box 2 of your w2.  Simply enter the information directly from your W2 into TurboTax.  It is taxable income.