Getting Started
4. Running VSCodium
Finally, Launch & Enjoy VSCodium
From Desktop Make Use of the Launcher:Or from Command Line with:
codium
5. Migrating from Visual Studio
How to Migrate from Visual Studio to VSCodium for Ubuntu GNU/Linux

So Now I’m truly Happy if My Guide could Help you to Quick-Start with VSCodium on Ubuntu 20.04 Focal!