My return is showing that iwill have to pay 1500 back to aca but it does not lower my return on top left side?

If you already entered your 1095-A, form 8962 calculates the Excess advance premium tax credit repayment. That amount is reported on form Schedule 2 line 2 and will carry over to form 1040 line 17.

 TurboTax already included that amount when calculating your refund.