Do you mean you need to pay your TurboTax fees?
Or do you mean you need to pay your tax due to the IRS or state?
If you have federal tax due you can pay by mailing your payment with the 1040V voucher, (which has the address printed on it, having the payment taken out of a designated bank account, or you can pay directly on the IRS website.
You must pay your state tax due using the state’s preferred method of receiving payment. For most states that will be by making a payment to the state’s own tax website, or by mailing a check or money order.
To apply for a payment plan with the IRS