The question you referred to wants to know how much you paid the IRS for federal taxes owed at the time, if any, if you filed an extension for your 2017 tax returns.

This series of questions on extensions does not make any sense.  I paid my taxes. I filed an extension and overpaid at that time. When I completed my filing I got a refund. Why would TurboTax be asking these questions.  Their existence is causing me a great deal of time that I think is being wasted. I put in the amount I paid with the extension. No where does it ask what my final tax bill was, whether I got a refund or any other information that would give some sort of sense to these questions. Am I wasting my time? Should I ignore these questions? If I am not wasting my time where do I find documentation on how to treat these questions (which are not self explanatory).

And now TurboTax is saying I have a huge refund.  Now I think, if I have already paid my taxes in full and I am not due any refund, that I should ignore these questions.

OK. So, the Payments with Extensions section is referring to 2018 taxes not yet filed (so there is no extension).  Then there are Payments with 2017 Extensions (state and local only) ... I had a 2017 extension made an over payment that was refunded.  Then there is a 2017 Refund Applied to 2018 ... I think this is zero because I have already received my refunds.

So, given that, what about the "Payments with your 2017 State Extension?"

I am referring to the section "Other Income Taxes" under "Deductions and Credits" ... I have decided all of this extensions stuff is not applicable.