Why do you say it doesn’t work? What’s the problem? Can you share the last command used, the rsult and explain the problem?
Also explain what exactly do you expect to get here because msfvenom will not create a malicious .ipa file if that’s what you are trying to do, it will be just a script but in order to run it you would need a jailbroken iphone or iPad.
I expect from msfvenom to create payload and make a backdooring with images or link or anything. if that wouldn’t work. how to make a backdooring in iOS or gaining access in iPhone.