Is this c# also unity c#?

Answer 1

The C# course in SoloLearn teaches you the fundamentals, and teaches console code programming techniques.

The C# course in SoloLearn does not teach you game development, specifically using Unity.

Answer 2

Yes

Answer 3

Unity uses C# as a scripting language. C# is C# – so yes. But mind that in Unity you'll probably work mostly with their classes