There is an Arabic translation on the Q2A add-ons page. Follow the instructions there to install it.
The default SnowFlat theme supports RTL languages, but if you need to develop your own theme look here.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.