I've found this post when searching for something to display CPU, memory utilization in Ubuntu 20.04 top pane.
According to the accepted answer …
sudo apt-get install gnome-shell-extension-system-monitor
This will also pull in all the required dependencies, and after a
reboot or log out the system monitor was in the top task bar.
I did try the solution given, rebooting the computer, but nothing happens.
I can't comment there as
50 reputations are required which I don't have yet at the moment.
How do I get this utility appear on the top pane?
Also, if there is an alternative/probably better tool, let me know.