Ok you Apple experts...question

[Detectorist]

What's the best and quickest way to find out if a Mac has a master password set?

[andyo5]

What's the best and quickest way to find out if a Mac has a master password set?

Click on the apple icon in the upper left. Then select:
System preferences
security
filevault

The window will say whether a master password has been set, and if not it will allow you to set one.

[Detectorist]

Click on the apple icon in the upper left. Then select:
System preferences
security
filevault

The window will say whether a master password has been set, and if not it will allow you to set one.

Thanks! I was beginning to lose hope.

[checkyoursix]

As an alternative, use Spotlight (the little magnifying glass at the top right of your screen) and search for 'master password'.