To install Ubuntu 20.04 on your VPS server, you can use various methods, including downloading the system image from the Ubuntu website and installing it via SSH, or selecting a pre-configured Ubuntu 20.04 image from your VPS provider. These methods provide flexibility and simplicity in installing the operating system on your server. If you prefer greater control over the installation and configuration process, downloading the image from the Ubuntu website and subsequently configuring it via SSH may be the preferred option. On the other hand, a pre-configured image from your VPS provider can simplify the installation process, freeing you from starting from scratch and providing a quick start to your server.