The Activity Screen is the fourth tab on the bottom navigation bar and is represented by the pulse icon.
There are two tabs within the Activity Screen; Transactions and Scheduled. The Transactions tab shows all debits and credits to and from your Switch account. It includes Pending transactions but excludes internal transfers such as Vault to Spending Wallet.
The Scheduled tab shows all future and recurring transfers you have set up. Recurring transfers you've scheduled will show their frequency below the amount, and transfers you've scheduled which are not recurring will simply show the date the transfer will occur. These include scheduled transfers from your Vault to your wallet or to/from an outside account.