If you want to filter orders by their method of payment, go to the "Report" tab and select "orders" (it will be pre-selected).
In the "Show" column select the event(s) which you want to issue a report for. If you want a report for a specific date select that from the list.
If you want to see the total of orders for an event, in the "Creation date from:" set the date sales started.
Cast payments Report
To find the orders paid in cash you can export the order report and select cash in the payment method column.
Card or Viva Wallet payments Report
To find the orders paid by card or by viva wallet you can expect the order report by selecting "Viva Payments" and "Viva Wallet" in the Payment method column.