Hi @powetri,
For what you want to accomplish I suspect CV-VR Cam won’t be part of your workflow. Reticle-based interaction tends to benefit from actual 3D geometry in the game engine rather than just 360 stereo video. You might want to check out our Cinema 4D -> Unity ( https://www.cineversity.com/vidplaylist/unity_game_development_with_cinema_4d/unity_game_development_with_cinema_4d_part_01 ) tutorial series.
I suspect there will be some Python VR projects in the future, but at the moment most of the VR development is happening in C++ and surprisingly enough Javascript + WebGL.
For unity though, you’re probably best off learning C#, or if that’s intimidating, you might want to look into the PlayMaker asset on the Unity Store along w/ an additional VR add-on pack.
Best of luck!
Donovan