Thanks for running the other lines again and sorry, I should have been a bit more specific for the openssl step.
Run this
brew reinstall https://github.com/tebelorg/Tump/releases/download/v1.0.0/openssl.rb
instead of
brew install openssl
Just the first - the second one will install openssl 1.1 again. You don't want that

I don't think you need to run the other steps again, just the first one above.
For all the shasum & GPG steps you need to run the commands in the same directory/path as the downloaded files, so you'd need armory_0.96.5_osx.tar.gz and sha256sum.txt.asc from here:
https://github.com/goatpig/BitcoinArmory/releases/I don't recommend skipping the verification steps but they aren't vital to getting Armory to run. They are important for verifying that you haven't got corrupt or otherwise tampered with software.
Should just be a case of following the three steps under for the rest:
https://github.com/goatpig/BitcoinArmory/blob/master/README_macOS.md#running-armoryAgain, make sure you have openssl 1.0. Good luck!