Want to rotate this 3d object

I am really really new to Xcode and am doing my best, but I'm struggling lol. I've successfully added a 3d object I made in blender into my project but now I'm trying to get it to constantly rotate. I assume I'm supposed to be using the RealityKit framework instead of SceneKit. But I can't find any good tutorials online. Can someone explain how to make this rotate like I'm 5 years old. Any help is greatly appreciated! Thank you!