Once you enter all of your deductions, TurboTax will automatically compare the Standard Deduction, which is a fixed dollar amount based off your filing status, to the sum of your Itemized Deductions, which appear on Schedule A.
The one that will give you the most benefit on your tax return, usually the higher dollar amount, will be automatically applied for you. TurboTax will let you know which one it has selected for you, and give you the option to change it if you would like to do so. This is most likely the screen you are seeing.
There is a more detailed explanation of the deductions below:
https://ttlc.intuit.com/replies/3302313
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