On the Tenant tab, you can download user license information, and you can check out and download information about how many Flow runs have gone through your tenant in comparison to your quota:
User license information
Because there are multiple licenses that can grant access to PowerApps and Flow, you might find duplications in your CSV:
Flow runs
The CSV that you can get here shows which Flows have run, who owns them, and what the number of runs is, as well as what environment they're running in, but it won't tell you the date or time ...
