How do I Move My Mouse Position With a Scrollbar?

Question

Video link

I have a lot of dots that move, depending on the mouse position. I would like to change it so that it moves with the scrollbar value. How could I implement something like this?

I have tried giving my direction value direction = scrb.value - bowpos; instead of mousepos, but that gives me an error.

    void Update()
    {
        Vector2 bowpos = transform.position;
        Vector2 mousepos = Camera.main.ScreenToWorldPoint(Input.mousePosition);       
        direction = mousepos - bowpos;
        FaceMouse();
        for (int i = 0; i < Points.Length; i++)
        {
            Points[i].transform.position = Pointposition(i * 0.1f);
        }
    }

My Code:

public class arrowproject : MonoBehaviour
{
    Vector2 direction;
    public float force;
    public GameObject PointPrefab;
    public GameObject[] Points;
    public int numberofpoints;
    public bool dotss = false;
    public Scrollbar scrb;
    // Start is called before the first frame update
    void Start()
    {
        Points = new GameObject[numberofpoints];
        for (int i = 0; i < numberofpoints; i++)
        {
            Points[i] = Instantiate(PointPrefab, transform.position, Quaternion.identity);
        }
    }
    // Update is called once per frame
    void Update()
    {
        Vector2 bowpos = transform.position;
        Vector2 mousepos = Camera.main.ScreenToWorldPoint(Input.mousePosition);     
        direction = mousepos - bowpos;
        FaceMouse();
        for (int i = 0; i < Points.Length; i++)
        {
            Points[i].transform.position = Pointposition(i * 0.1f);
        }
    }
    void FaceMouse()
    {
        transform.right = direction;
    }
    Vector2 Pointposition(float t)
    {
        Vector2 currentPointpos = (Vector2)transform.position + (direction.normalized * force * t) + 0.5f * Physics2D.gravity * (t * t);
        return currentPointpos;
    }
}