First, make sure you've added your Apple device within uTorrent Pro. For more info on adding devices, click here. When the device has been added successfully it will appear under the Devices list on the left side of the uTorrent window.
Locate the completed torrent you want to convert under the Torrents tab in uTorrent Pro. Click the name of the torrent and simply drag-and-drop it onto the correct device.
Alternatively, you can right-click on the torrent you wish to convert and select the "Convert for..." option along with the appropriate device.
Once you have dropped the file onto the appropriate device it will begin conversion:
When the file has finished conversion, click on the appropriate device name under the Devices column. From here, click the Open iTunes button to open the iTunes application.
Your files will be added to iTunes under a new uTorrent playlist. In iTunes 11, check under the Movies tab. Due to the way iTunes is set up, your newly converted files may appear under the Home Videos tab.
Once the converted files have been transferred to iTunes you can sync them with your iPod, iPhone, iPad, Apple TV, or other iTunes-compatible device.