C# Mouselook Script errors, need assistance.

I was following a video by HyperShadeTutorials(https://www.youtube.com/watch?v=-LJsXN55TC4) in which he teaches you how to create a mouselook script in C#, I have not yet finished it, however, there are multiple errors in the code, I have tried multiple ways to solve the problem to no avail. I wish to test the MouseX movement as he does in Part 2 of his series yet I simply am unable. Please help me, this is extremely fustrating

I would appreciate it if you could explain thoroughly on a solution and what causes the problem, I'm a beginner so any information would be useful to me.

Here is what I have written so far: public class Look : MonoBehaviour {

     public enum RotationAxis (MouseX = 1, MouseY = 2);
 
     public RotationAxis RotXY = RotationAxis.MouseX | RotationAxis.MouseY;
 
     //X Axis
     //sensitivity
     public float xspeed = 200f;
     //Minimum camera angle
     public float xmin = -360f;
     //Maximum camera angle
     public float xmax = 360f;
     float RotationX = 0f;
 
     //Y Axis
     //sensitivity
     public float yspeed = 200f;
     //Minimum camera angle
     public float ymin = -45f;
     //Maximum camera angle
     public float ymax = 45f;
     float RotationY = 0f;
     public Quaternion RotOrigin;
 
 
     void Start () {
         RotOrigin = transform.localRotation;
     }
     
 
     void Update () {
     if (RotXY == RotationAxis.MouseX) {
             RotationX += Input.GetAxis ("Mouse X") * xspeed * Time.deltaTime;
 
             Quaternion Xquat = Quaternion.AngleAxis(RotationX, Vector3.up);
             transform.localRotation = RotOrigin * Xquat;
         }
 
 
     }
 }

--------------------------------------------------------------------------------------------------------------- Errors:
Look.cs(6,34): error cs1519: Unexpected symbol '(' in class, strut or interface member declaration. Look.cs(6,42): error cs1519: Unexpected symbol '=' in class, strut or interface member declaration. Look.cs(6,54): error cs1519: Unexpected symbol '=' in class, strut or interface member declaration.

Note: I have changed the variable names as I prefer shorter ones(don't know why, it's just more aesthetically appealing to me)