It seems like CX File Explorer is displaying all VR apps except Skybox. You may want to try the following steps:
Ensure that Skybox is properly installed.
Restart the CX File Explorer app.
Check if Skybox is in a hidden folder or requires a specific path to appear.
Re-scan or refresh the apps in CX File Explorer.
If the issue persists, you could reinstall Skybox or clear cache/data for CX File Explorer.