unity – error CS1503: Argument 1: cannot convert from ‘damage1’ to ‘float’

Hello Guys, I am Issa.

I was following the (Shooting with Raycasts) – Unity Tutorial
By Brackeys. At 8:06 time he said to tap the crate 5 times.
But I had this error :

(AssetsScriptsGun.cs(33,30): error CS1503: Argument 1: cannot convert from ‘damage1’ to ‘float’).

My code was:

Gun.cs :

using UnityEngine;

public class Gun : MonoBehaviour
{

    public float damage = 10f;
    public float range = 100f;

    public Camera fpsCam;
    
    void Update()
    {
        
        if(Input.GetButtonDown("Fire1"))
        {
            Shoot();

        }
        
    }

    void Shoot()
    {
        RaycastHit hit;
        if (Physics.Raycast(fpsCam.transform.position, fpsCam.transform.forward, out hit, range))
        {
            Debug.Log(hit.transform.name);

            damage1  damage = hit.transform.GetComponent<damage1>();

            if(damage != null)
            {
                damage.TakeD(damage);

            }

        }

    }

}

damage1.cs :

using UnityEngine;

public class damage1 : MonoBehaviour
{
    public float health = 50f;

    public void TakeD (float amount)
    {
        health -= amount;

        if(health <= 0f)
        {
            Die();

        }

    }

    void Die()
    {
        Destroy(gameObject);

    }
}

Please can anyone help me!!!