Incredibuild is almost a virus. It’s prohibitively expensive and if you have it installed and you’re not using it it’ll just be irritating. And you no longer need it if you’re talking about compiling on a single machine, only across the network. You can safely uninstall it with the VS installer though.
You can tell VS to just use more cores to build just by itself, but with UE you sometimes get file-in-use conflicts so I usually have mine left at 1 for engine builds. That’s in the settings somewhere.