You need to check what version of the DLP Endpoint Agent is installed but cannot find it.
On the local machine if you look at the EPDA.exe file located in the DLP Endpoint Agent installation folder (under Program Files\Manufacturer\Endpoint Agent) you should be able to check the version by opening the properties of that file and viewing the details tab.
Open a Terminal window and run the command below:
-p "/Library/Manufacturer/Endpoint Agent/Resources/Info.
plist" | grep 'BundleVersion'
"CFBundleVersion" => "14.5.0103.01005"
Mac OS X Catalina (10.15.x)
plutil -p "/Library/Manufacturer/
"CFBundleVersion" => "15.5.0207.01006"
Mac OS BigSur (11.x)
plutil -p "/Library/Manufacturer/Endpoint Agent/Symantec.app/Contents/Info.plist" |grep "BundleVersion"
"CFBundleVersion" => "15.8.00102.01006"
Additionally, if Endpoint Agent is already connected to a DLP Endpoint server you should be able to view the version in the Enforce UI under System > Agents > Overview looking at that machine in the list.