From my own observations, the reported number of requests doesn’t necessarily give an instantaneous count (I’ve just logged in, synced some data and executed a trigger without the number of reports increasing).
From the docs, these are the different types of events:
Function Executions , such as when a user calls a function from a client app or when a function calls an external service. If an executing function calls another function, Realm considers both executions as part of the same request.
Trigger Executions , such as when a database trigger matches a change event, a scheduled trigger is configured to fire, or an authentication triggers responds to a user login.
GraphQL Requests , such as when a client application issues a GraphQL query operation or calls a custom resolver.
Webhook Requests , such as when an external service sends a notification event or interaction payload to an incoming webhook URL.
Sync Operations , such as when a sync client uploads a changeset, when Realm resolves a conflict in an uploaded changeset, or when Realm sends changesets to a connected sync client.For more information on sync operations, see Realm Sync Protocol.
There should be a log entry for most of these events.