What do I do with a json file?

I have been fumbling toward installing World of Warcraft. I’m pretty sure I have gotten lutris, vulkan, wine, and correct drivers installed.

So now I’m here at lutris.net and I have added Blizzard Battle.net and World of Warcraft to my library.

When I go to the Install button for either of these, my options are to view or download the install script.
It downloads as a json file.
What do I do with that?

New computer, Linux Mint (Cinnamon) installed.