Note: this feature is part of Homey Experiments. We cannot give support on experiments so use them at your own risk.
With the Apple HomeKit Experiment you will be able to integrate the devices which are connected to Homey with Apple HomeKit.
You can enable or disable this experiment via More (...) > Settings > Experiments.
Once turned on your devices will show up in Apple Homekit and you will be able to control your Homey connected devices via Apple HomeKit.