how to change value from other script in collision

Unity Engine
1

Hello everyone im stuck with this piece of code.

if enemy got hit then do score + 1 and delete Enemy.

this in in the Movement script:

using UnityEngine;
using System.Collections;
using UnityEngine.UI;


// A very simplistic car driving on the x-z plane.

public class movement : MonoBehaviour
{
    public UpgradeMessageGuns UMG;

    public int health = 100;

    public static int score;
    public int highscore;

    public Text ScoreText;
    public Text HScoreText;

    public float speed = 6.0f;
    public float rotationSpeed = 75.0f;

    void Update()
    {

        ScoreText.text = "Score: " + score.ToString();

        // Get the horizontal and vertical axis.
        // By default they are mapped to the arrow keys.
        // The value is in the range -1 to 1
        float translation = Input.GetAxis("Vertical") * speed;
        float rotation = Input.GetAxis("Horizontal") * rotationSpeed;

        // Make it move 10 meters per second instead of 10 meters per frame...
        translation *= Time.deltaTime;
        rotation *= Time.deltaTime;

        // Move translation along the object's z-axis
        transform.Translate(0, 0, translation);

        // Rotate around our y-axis
        transform.Rotate(0, rotation, 0);

        if (health < 1)
        {
            Destroy(gameObject);

        }
    }

    public void OnCollisionEnter(Collision collision)
    {

        if (collision.gameObject.tag == "Bonus")
        {
            UMG.ActivateGuns();
            Destroy(collision.gameObject);
        }

        if (collision.gameObject.tag == "Enemy" && health>0)
        {
            health -= health - 10;
            Destroy(collision.gameObject);
        }
    }

    public void addscore()
    {
        score++;
    }
}

BulletDelete script:

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

public class BulletDelete : MonoBehaviour
{
    public Movement movement;
    // Start is called before the first frame update
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        Destroy(gameObject, 1);
    }

    void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.tag == "Enemy")
        {
            movement.score++;
            DestroyObject(collision.gameObject);
        }
    }
}
2

Error Code:
Assets\BulletDelete.cs(7,12): error CS0246: The type or namespace name ‘Movement’ could not be found (are you missing a using directive or an assembly reference?)

3

I think the main issue is from Bullet Delete class- line 8. public Movement movement;.
I supposed you should declare in this way “movement Movement;” instead, because if you want to inherit function from a script you need to declare the original class name first then only declare new var name.

Correct me if I’m wrong. Peace