Copy game data from one PS4 to another?
Solution 1:
You can copy data off the PS4 to a external drive, and then copy it back to a PS4 in the same way. However, the game may have restrictions on the saved data. For example, some games won't allow you to use save data from another user account. The only thing to do is give it a try and see if you get an error within the game with trying to load it.
This PS4 Guide gives instructions on loading data off a USB drive.