Please use Code Tags in the future on the forums to make your code more reasonable.
First step is look at the error. Note the line number and column number of the error in parentheses: Assets\PlayerController.cs(6,46): error CS1003: Syntax error, ',' expected
Let’s look at line 6:
public class PlayerController : MonoBehaviour;{
Ah there’s your problem, a stray semicolon! ; Delete that.