From the top-right corner of your similarity report you can find an option to View Properties. Clicking on the icon will open up a side menu. From the the Details tab you can view and manage who is shared on the report, view the folder that the report is located in, view the scan profile that was used, view the date/time the scan was completed, and the total number of pages the scan required. From the Activities tab you can see information about rescans.
This feature can also be accessed by simply right-clicking on the report from the My Scans page and selecting View Properties.