TurboTax does not have a box 10 field for the 1098 form. I have an amount to enter but there is not an option. Where do I enter the Box 10 amount?

If this is a mortgage interest statement, Box 10 is not used by tax software. 

The Lender can use it for several different things. 

The information in Box 10 is not needed. 

According to the IRS:

"Box 10. The interest recipient may use this box to give you other information, such as real estate taxes or insurance paid from escrow."