MacBook Pro Keyboard Language

If you want to type Arabic, you just go to system preferences > keyboard > input sources, add Arabic, and the select that in the "flag" menu at the top right of the screen. Keyboard Viewer tells you which key does what.

https://support.apple.com/guide/mac-help/use-the-keyboard-viewer-on-mac-mchlp1015/10.14/mac/10.14

If you want your physical keys to have Arabic letters on them, Apple does produce MacBook Pros like that, and you might want to sell what you have and get one of those. Otherwise you have to shop for a new keyboard or use a "skin" which fits over your current one and is printed the way you want. Whether there are places that engrave keys with new letters I don't know.

Hendiko wrote:

Thanks Tom for your kind reply. I just want to ask you if you know the cost for changing Keyboard from English only to English & Arabic?

Sorry, no. You have to contact stores directly yourself to find out if that is possible where you live and how much they would charge.