Though there are official Ubuntu packages available on the WPS download page, the snap (containerized software package) makes it easier to install WPS in Ubuntu 18.04 and higher.
Simply open Ubuntu Software, search for
WPS and you’ll see 3 packages available.
All the 3 snap packages are the latest (10.1.0.6757 at the moment) and maintained by the community. Choose to install the one you preferred. Once installed, launch it from the application menu and enjoy!
You can also install WPS via the command line as well by typing the line below in Terminal.
sudo apt install snapd && sudo snap install wps-office