You need to build in XCode to make the ARKit iOS build. You can make a Mac VM on a pc and run xcode on that. But I am not aware of any way to push to device without doing on Mac OS and Xcode.
Unity has a ARKit remote that sends all the info to the PC from the device so you can test on PC. But that is the closest I know of. No similar solution for UE4 AFAIK.