We doesn't have the site to check your payout in v3, but you can use Dashboard (Windows GUI) or Dashboard (docker) to access your payout information. It allows to see past earnings, how much accounted and how much distributed (see Payout information link on your dashboard).
You can select a date range (Custom Date Range) in the Info & Estimation section of the Payout information to see earnings for that date range with usage details and how much was distributed (paid).
In the Payout History section of the Payout information you can select a month and see how much each satellite paid you. If you expand any of them, you will see details how much accounted, what the held amount for the selected month and how much money has been distributed (paid). You can also see a link to the transaction.
In the Held Amount History section of the Payout information you can select a month and see how much each satellite take a held amount from your payout (as escrow), and how much returned to you (see How does held back amount work? for details).
You can also see your payouts on the blockchain, just click the View on Etherscan button.
If you opted-in for zkSync, you will see a button View on zkScan and check mark that you opted-in for zkSync, also the TX link in the Payout History would point to https://zkscan.io/ instead of https://etherscan.io/.
You can also use the Calculate the current earnings for v3 script to calculate your current earnings or past payouts.