How do i Save bools from a scene to another in Unity

[sage tinsel]

Use EditorPrefs or DontDestoyOnLoad

[fierce roost]

1. save bool to as playerprefs int (0 = false, 1 = true)
2. load scene
3. on scene start load the playerpref (make sure 2 convert from int to bool)

[stiff osprey]

That seems like a lot for one bool

I'd just use DontDestroyOnload like Mikkel suggested. Most "manager" sort of scripts use DontDestroyOnLoad so the bool could be put in one of those anyways

[sage tinsel]

funny enough saving it as a PlayerPref variable might be less "intensive" but in general that does not matter at a indie level