Getting Started
4. Launching MySQL Workbench
Finally, Launch & Enjoy MySQL Workbench
From Shell simply with:mysql-workbench
Or Make Use of the Desktop Launcher:
5. MySQL Workbench Getting-Started Guide
Getting-Started with MySQL Workbench for Ubuntu GNU/Linux

So Now I’m truly Happy My Guide could Help you to Quick-Start with MySQL Workbench on Ubuntu 20.10!