GNOME Version: Not available simply means that the system cannot locate a Gnome Desktop stack to query the version.
This is expected behavior for a stock install of Ubuntu Budgie.
Many components of Budgie are originally based upon (or forked from) GNOME, but Budgie is not GNOME. Installing Ubuntu Budgie does not also install GNOME.
GNOME Version: Not available
simply means that the system cannot locate a Gnome Desktop stack to query the version.This is expected behavior for a stock install of Ubuntu Budgie.
Many components of Budgie are originally based upon (or forked from) GNOME, but Budgie is not GNOME. Installing Ubuntu Budgie does not also install GNOME.