Please go to Microsoft 365 admin center>Compliance>Audit to get results and export it as a report:
More information about audit search for your reference:
Move-SPUser and stsadm -o migrateuser are farm-wide operations. There is no way to restrict identity migration to a single Web Application.
There are 3rd party products that can accomplish this, like Metalogix ControlPoint can clone permissions within a specific scope.
Increase licenses in Target Office 365 organization to accommodate all mailboxes that will be migrated from the source tenant.
Create Administrator accounts in source and target tenants for use in migrating from Office 365 to another Office 365. Some migration tools may require more than one admin account in the Filesynced tenant to optimize the data ...
The answer appears to be that this is not possible:
Testing by a Microsoft employee respondent confirms my findings. This may be possible with the snap-in, though I am not running PowerShell on the SharePoint ...
This script will get all the editForm webparts and export it to a csv file. From there you can filter down for Script Editor and Content Editor Web Parts in the csv file. To get NewForm or DisplayForm update the script to look at DefaultNewFormUrl or DefaultDisplayFormUrl.
Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue