Graphical interface
There are graphical interfaces available for multipass (see more details in the Multipass Graphical Interface chapter).
We recommend to use rdp:
sudo apt install ubuntu-desktop xrdp remmina-plugin-rdp remmina
sudo passwd ubuntu # Set password here
Now you should be able to connect using the IP of the earlier multipass list command:
remmina -c rdp://<IP>
If the environment comes up with a small resolution, use this great Stackoverflow suggestion.
Note that after the graphical setup you may be instructed to restart the multipass instance. You probably want to do this before installing the services within (as some may require re-initialization after a reboot otherwise).