Solve the CS0131 error on unity this is my code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MouseLock : MonoBehaviour
{
 
    public float mouseSensitivity = 100f;

    public Transform playerBody; 
 
    float xRotation = 0f;

    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        float mouseX = Input.GetAxis("MouseX") = mouseSensitivity = Time.deltaTime;
        float mouseY = Input.GetAxis("MouseY") = mouseSensitivity = Time.deltaTime;

        xRotation -= mouseY;

        transform localRotation = Quaternion.Euler(xRotation, 0f, 0f);
        playerBody.Rotate(Vector3.up = mouseX);
    }
}