For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Emulators:Waydroid/openSUSE_Slowroll/Emulators:Waydroid.repo
zypper refresh
zypper install waydroid
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Emulators:Waydroid/openSUSE_Factory/Emulators:Waydroid.repo
zypper refresh
zypper install waydroid
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Emulators:Waydroid/16.0/Emulators:Waydroid.repo
zypper refresh
zypper install waydroid