Well, you can create a sym link to the script to wherever you want (see man ln), or you can modify your $PATH environment variable to include the complete path to the bin folder where this is located, and that way it’ll be runnable from anywhere in the terminal.
If you want a GUI “icon” in the applications menu, you need to add desktop file as noted in the answer I’ve linked to above.
Please do not expect things to work on Linux (or Mac) as they do on Windows. They’re all different operating systems with completely different design principles for their user interfaces.