Samsung's 9th Android 13 update has started to roll out for the Fold4 international devices, F936B. bringing with it the June Security patch and bugfixes
Build number = F936BXXUCWE6
Build date = 23 May 2023
Android Security patch = 01 June 2023
Download size = (TBA) MB
Camera version = 13.1.00.32
It is a FOTA, (Firmware Over The Air), update and you can check... Settings > Software update... to see if it is available for you. Alternatively, you can connect to the Samsung PC suite, Smart Switch and check via that.