Hello,
You can create translations for the XStore Core plugin by following the instructions provided in our documentation: https://www.8theme.com/documentation/xstore/theme-translation/base-theme-translation/
If you would like to translate it into Arabic, you can use the Loco Translate plugin. Simply follow the steps in the guide to add and edit the Arabic translation.
Should you need any further assistance, feel free to ask.
Best Regards,
8Theme’s Team