Apple better just makes a big button that Loves and adds the song automatically instead of hiding everything in their tiny menus.
Because I have no understanding in adding code to shortcuts, I found another solution and it works pretty well so far.
Shortcuts doesn't have any "Love" action, so I used Automator to record and run my mouse clicks.
You can run it from a Macbook Touch Bar or by tapping the current application and clicking Services/General/"Name of your Quick Action"
The image below shows the actions.
As for recording the "Watch Me Do", I did:
Tap the Music window
Left click the song that is currently playing
Tap Love
Left click the song that is currently playing
Tap Add to Library
I got a warning that I needed to allow "ServicesUlAgent" to control my computer in System Settings/Privacy & Security/Accessibility.
If you don't have a Touch Bar and want to run the Quick Action from any application, you have to allow all those applications to control your computer as well.
I have no idea how else to run a Quick Action or Automator Script.
Hope this is helps someone.