Download latest add-on zip file from Download Latest Version (Version 2.7.0) September 30, 2022 UTC
Start Blender and select menu
Add-ons from the left menu when the preferences screen, and then press the
Install button in the upper right corner.
When the File View window appears, select the add-on you just downloaded.
Import-Export: VRM format in the add-on list view. There is a search box in the upper right corner if there are too many items to find.
Press the checkbox to complete the installation of the add-on.