When you open the Orchestration Usage dashboard, some gauges may say 'No Data To Display'.
From the navigation, open Orchestration - Orchestration Usage
Jakarta and later
This is usually because there literally is no data to display.
If there is a workflow context that included orchestration activities, then each activity will be logged in the 'orch_execution' table. If that table is empty, then none have run yet.
That could be confirmed with this list, which queries the workflow context activity history directly:
You could further check the count records that provide the data for this dashboard, where Table contains 'orch':
Once workflows that contain Orchestration activities have been run, you will start to see data displayed.