I didn’t have a chance to test it, but it’s there and enabled. SkyCreator actor is there too, can be dropped into scene.
Engine I use is 4.27.1 (Oculus fork) and plugin was installed into 4.27 (stock launcher version). Basically the same as if I were to install it into UE5EA (as per Sky Creator’s docs Documentation – Dmitry Karpukhin).