I don’t know about Macs, but on a Windows machine, even if copying the Encore folder worked, you would still need to install the special Encore fonts to be able to see the notation.
For what I can remember, you simply copy the Encore files to another Mac, the additional fonts being included inside the application. The latest version of macOS you can have to run Encore 5.0.7 is Mojave, in case you don’t already know.