Save And Load a Float from another Script.

Hi Everyone, I need some help regarding save and load function.I Am using Binary Method and trying to save an Float which is in another script (Game Manager Script) and then again load that float.
I Tried almost everything on youtube,Unity Docs,Forums but nothing seems working.Any Help Would be appreciated.

Post your progress. We’ll help you work through.

In any case, neither ways are 100% secure.
If user decides to mess with the data, not even encryption will stop them.