Get your taxes done using TurboTax

am really nervous & confused by this. a previous screen already said i had a $130 "Underpayment Penalty" (because i don't pay quarterly, which is fine for me), but then to have this over $6k be populated in this 2017 tax liability field - what is that & how is it affecting how much i owe?  AND, why is it for 2017 when i'm doing my 2018 taxes??  i've been using turbotax online for many years; it has all my previous records; if i owed 6 grand in 2017, then why didn't it tell me that then? but still, that's a lot more than i've ever owed.  moving past this screen & leaving it filled in doesn't "seem" to affect my total owed (at this point).  i'm hoping somebody can explain this to me soon, as i need to finalize & file asap. thanks!