There are some server requirements for the server, so do make sure your server meets the requirements.
cPanel & WHM version 98 for Ubuntu 20.04 LTS is experimental software, and we do not recommend using it in production environments.
To install cPanel & WHM on your Ubuntu server, run the following command:
cd /home && curl -o latest -L https://securedownloads.cpanel.net/latest && sh latest
This command changes your session to the home directory, downloads the defined version of cPanel & WHM, and runs the installation script.
We have a guide on installation available in our documentation that explains how to install cPanel & WHM.