@softgoat it depends on your distro!
you can just put it in a folder in your home, but if you want to make it accessible to all users `/opt` and `/usr/bin` are good choices (lookup "file system heirarchy standard" for why)
in my distro, NixOS, all executables are stored in `/nix/store`, and there is a distro which has a /Programs directory, if I recall correctly