I need help please! I can't modify the script!

When I enter in Unity Game Project In Script it says,api-ms-crt-win-stdio not found" and after 1 minute it enter in Mono Develop and when I want to change the script or crash or I write Input(for moving) and Is not coloured(that means I don’t have what I need) Please help me as quickly as possible to change the script and made that roll-a-ball game. To remember I have a compiler named Mono.exe and I reinstalled Microsoft Visual+Redistruable 2015.

I can’t quite tell what is going on but I have always had issues with MonoDevelop. Try installing Visual Studio Community 2015 (not Visual Studio 15, it’s in beta and not supported yet) and setting that as the default code IDE.