TurboTax automatically "moves" the amount on Schedule 2 line 10 to Form 1040 line 15. You do not have to do anything to move the amount.
If you have an amount on Schedule 2 line 10 that is not showing up on Form 1040 line 15, more details about your situation may help diagnose your issue. For example, what amounts are shown on your Schedule 2, and do you receive any error messages when you run the Review routine?
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