Snap store isn't installing
This error means that the snapd service is not running. Enable it with sudo systemctl enable snapd.service, and then start it with sudo systemctl start snapd.service, and then you should be able to install the snap store.
If enabling and starting it doesn't fix the error, run sudo systemctl status snapd.service to see what the status of the Snap daemon is, and if it mentions the word masked, try following these steps.