Lua scripts can be used with Neovim add on modules if you are interested in setting up your own editor and having a custom IDE experience. It's also used by some Emulators, so if you're into old video games and ROM hacking, it can be a useful tool.
Other than that it's likely a complete waste of time.
Seems like it's actually a really great language with really great use case potential. The language is basically javascript but even quicker and easier to learn. You can incredibly and simply open up a function in your c program to the lua script or vice versa.
For instance if you had a starcraft type project and you wanted to make it so the user could make custom scenarios for a custom map, instead of writing your whole own system to handle this a lua script would be BY FAR the best route to go.
The syntax of the language only takes one full day of tutorial go through. And the c integration probably another half day.
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