Unity player movement issue

I was trying to follow brackeys tutorial on player controller, but the code is not working.

Here's the code:

using UnityEngine;

public class Mouse_Look : MonoBehaviour 
{
    public float mousesen = 100f;
    public Transform playerBody;
    float xRotation = 0f;

    // Start is called before the first frame update
    void Start()
    {
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;   
    }

    // Update is called once per frame
    void Update()
    {
        float mouseX = Input.GetAxis("Mouse X") * Time.deltaTime * mousesen;
        float mouseY = Input.GetAxis("Mouse Y") * Time.deltaTime * mousesen;
        
        xRotation -= mouseY;
        xRotation = Mathf.Clamp(xRotation, -90f , 90f );
        
        transform.localRotation=Quaternion.Euler(xRotation,0f,0f);
        playerBody.Rotate=(Vector3 up * mouseX);
    }
}

What should I do??

transform.Rotate is a method, not a property, so
playerBody.Rotate=(Vector3 up * mouseX);

should be
playerBody.Rotate(Vector3.up * mouseX, playerBody.rotation.y, playerBody.rotation.y);

It should be playerBody.Rotate() instead of playerBody.Rotate=().

Unity transform.Rotate documentation:

This playerBody.Rotate=(Vector3 up * mouseX);
Should be playerBody.Rotate(Vector3 up * mouseX);

Rotate is method that takes in a vector 3. I suggest taking some time to understand the basics of rotation in Unity, rather than just copy pasting codes from tutorial. This might fix the error, but you will have to look for tutorial every time.

playerBody.Rotate=(Vector3 up * mouseX); to playerBody.Rotate(Vector3.up * mouseX); because ".Rotate" is method. you don't need "=". cheers mate!