My MacBook screen goes dark ~ 60 seconds. Where can I find the settings to change that? I've searched the web and answers indicate going into settings, but on High Sierra, this doesn't seem correct.
This is what I get when I click on system prefs:
System Preferences > Energy Saver.
It hasn’t changed in decades. It’s still there in High Sierra.
I suppose it could also be
System Preferences > Desktop & Screen Saver > Screen Saver > Start after: [ XX Minutes ].
Updated: Your new screenshot shows that System Preferences is opening to show the iCloud pref pane only. You need to click the button that looks like a grid of dots to get back to the main view where you can select pref panes from a grid of icons.