Unable to find macos High Sierra download link in apple.com site

Thank you Kappy. Did as you wrote then go this:

softwareupdate: unrecognized option `--fetch-full-installer'

usage: softwareupdate <mode> [<args> ...]

** Catalog Management:

--set-catalog <URL> Set the new catalog URL (requires privileges)

--clear-catalog Clear the catalog URL back to defaults (requires privileges)

** Manage Updates:

-l | --list List all appropriate update labels

-d | --download Download Only

-i | --install Install

<label> ... specific updates

-a | --all All appropriate updates

-r | --recommended Only recommended updates

--ignore <label> ... Ignore specific updates

--reset-ignored Clear all ignored updates

--schedule (on | off) Set automatic checking

-v | --verbose Enable verbose output

-h | --help Print this help

Thank you macjack. No we're on to something. Switched to Safari, got the the High Sierra page in the App Store

Click on Get: window to sign in to App Store

Click Sign-in: get "Unknown error" with an option to click Sing In again

Click Sign-in again: "We could not complete your request. There was an error in the App Store. Please try again later."

Thank you again. One step closer. At least now I can find the High Sierra download page

Thank you mcjack, but it takes me to the iTunes store and back to the message "The item you've requested is not currently available in the U.S. store."

Bingo! Looks like this iMac was already signed in to App store under previous owner's account. Signed out, signed in with mine and it's downloading.

Thank you macjack!