If the screenshots and instructions don't make sense, that means you have an incompatible minecraft launcher -- you need get the version that is actually moddable. At that point, the next step is to download java minecraft the for windows or for mac laptops or pcs from the website minecraft.net. (don't get the for windows 10 version ; the windows version will work on windows 10) If you have a paid minecraft account on minecraft.net you can redownload the launcher for free. If you don't, you'll need to get a paid account on minecraft.net
But yes, it does need to be java minecraft
Or you can run all the skills and drills vox-l badge mods in the vox-l simulator within the browser without using minecraft launcher. However, it's still best to use minecraft, as there are some things the simulator can't render at the moment. But regardless, any badge mods can be unlocked or earned without testing.