You can monitor each run that results from an enabled flow:
Go to the Dashboard, click on Runs.
Find the run that you’re looking for, and click on it.
You will see the builder in a view-only mode, each step will show a ✅ or a ❌ to indicate its execution status.
Click on any of these steps, you will see the input and output in the Run Details panel.
The debugging experience looks like this: