SharePoint Essentials Toolkit 2018 Edition will list the product version on the left navigation on the bottom.
If this is not listed, then click 'Licenses' on Left Navigation
Click Manage beside SharePoint Essentials Toolkit Enterprise Suite
The SharePoint Essentials Toolkit product version will be listed beside 'Build'
Version numbers are also listed for each component. However, the documentation and QiPoint technical support will always use the SharePoint Essentials Toolkit Suite Build/Version.
NOTE: Our release notes and download links refer to product version using 'SharePoint Essentials Toolkit Enterprise Suite' version, which is incremented for any component change.