how can I download the latest version of iTunes

RonaldMorgan wrote:

how can I download the latest version of iTunes

No. Not for Mac.

iTunes does not exist for current versions of macOS.

What iTunes provided has been split up into other apps.

Details: What happened to iTunes? - Apple Support

Apple split iTunes up in Catalina. Choose Applications from the Finder's Go menu and use the new applications instead.

(220963)