I want software that gives me the choice to list the apps on my machine by least used or most used.
Might be a command line entry. Might be a way to click the 'Menu/All Applications' and have all listed as the most used.

Linux Mint Cinnamon 19
I usually launch applications from GUI
I have been using the Terminal more. I am still a novice.
There must be some command line entries that would give me my list of apps from most used to least used.

Thank You!

Some package managers have that kind of feature, I think I came across one a while back, but can't remember, it was a GUI version, I normally use the command line for package management.

Hello and welcome to LQ.

I've never heard of that but maybe one could create some program or cron task to monitor and watch a set of programs? There maybe one out there.

Without knowing your version/distro of Linux, what desktop GUI you're using, or how you're launching your apps, there's not much we can offer in the way of advice. Wouldn't be too hard to write a simple one-liner script to give you the top 10/20 commands you've entered, but that'll only work for apps launched from the CLI.
(replace the -n10 with whatever number of commands you want to see)

If you're using KDE, the Excalibur launcher will keep track of your most recently used apps. Gnome's launcher should also keep track of recently used programs as well.

i suspect the gnome desktop environment with its zeitgeist framework might provide something like that. no clue how to use that though; for me one of the reasons to use linux is that it doesn't collect this sort of statistical information.
terminal commands probably go separately; there's some oneliners floating around to list most used commands.