Hello @Youssef El Khattabe , Thanks for using Microsoft Q&A Platform.
exporting models in the document intelligence studio is not supported. However, you can copy models from one resource to another, the only way to use a Document intelligence model is to access it in the context of a resource.
Document Intelligence Studio enables project sharing feature within the custom extraction model.
Here is the similar thread you can refer to, if you want to try the developer console F12 option to obtain the raw JSON: https://learn.microsoft.com/en-us/answers/questions/1161655/how-can-i-download-my-custom-model-in-json-format
I hope this helps.
-Please kindly accept the answer and vote 'yes' if you feel helpful to support the community, thanks.