You can click the View on zkScan button on the main page of your web-dashboard (see Dashboard for CLI and Dashboard for GUI), as shown in the screenshot of the dashboard Payout section below. This will send you to your zkSync wallet page where you can review the latest L2 payout transactions received.
Payout section of the web-dashboard
If you do not see the notification "zkSync is opted-in", then you did not enable zkSync in the configuration of the node. See Configuring zkSync Payments how to opt in.
Open your web-dashboard (see Dashboard for CLI and Dashboard for GUI), navigate to the Payout section and click the Payout Information link. Scroll down to the Payout History section and expand any of the satellites. You should see a Transaction link. If you click on it - it will open the corresponding transaction on https://zkscan.io if you opted-in for zkSync and received payout on L2. If you did not opt in to zkSync, the Transaction link will show your L1 payout on https://etherscan.io.
Fig. Payout History section of the Payout Information window
If you do not see the Transaction link, then your node has not received payout receipts from the satellites yet. You need to wait at least 24 hours after the payout for the previous month has been completed to see it.
Check your wallet on zkscan.io
And finally, you can open https://zkscan.io, put your wallet address in the search field and click the Search button.