Pay current tax due prior to filing tax return

I didn’t make estimated payments because I withheld more than 100% of my 2021 tax liability. I think I can probably get a refund but not certain because I have some capital gains and 1099-Int. Can I pay guesstimate 2022 tax due now before filing the tax return? I don’t see the option of paying 2022 estimated payment anymore so not sure if I can select to pay ‘current tax due’. Will I get a refund if it is ends up I don’t owe anything? For example, $1,000 overpayment from w2 withholding + $2,000 current tax due paid in advance, will I get all $3,000 back as refund? Thank you!