Hi IanReddington-0774!
In my experience, if you have admin account, you can login in Office 365 admin center to select the channel where the video is located. On the Channel page, select the video whose statistics you want to view. Next to the date when the video was uploaded, you'll see the cumulative number of video views.
For more details, please refer to:
https://support.microsoft.com/en-us/office/view-statistics-for-a-video-in-office-365-video-46819666-2b24-4220-882d-aeceaf10a745?ui=en-us&rs=en-us&ad=us