Hello @Shwetha Kumari Anantha ,
Thanks for your question. Currently, Form Recognizer doesn't support Arabic Language.
For the list of supported languages you could refer the below article.
https://learn.microsoft.com/en-us/azure/cognitive-services/form-recognizer/language-support
Unfortunately, there is no timeline for the Arabic support at this point of time. Having said that, I would recommend you to voice out your requirement here - Azure Feedback - Cognitive Services. This is where the Product Groups look for features to add.