An "Unverified" checkout occurs only on ACH / Bank Account payment checkouts. This is the checkout state after a payer has entered their bank account and routing information, but before they have verified the micro-deposits in their bank account to complete the checkout.
1) Click on the Forms button in your account's main navigation.
2) Click on the form you're interested in.
3) Scroll to the Recent Unverified ACH Checkouts section and click View All Unverified ACH checkouts.