Player not moving at all even when my speed is set to what I want and hitting a movement key

I need SEVERE help. I’m doing a modification project for Ruby’s adventure and now I’m done with the project. Now my big problem is that when I’m testing out Ruby’s movement, she won’t move not even a millimeter. She has a script, animator, rigidbody, and even a box collider on her. It was working before but not I can’t test out the movement at all. No matter what I try, nothing is working. Can someone please help me out?? I’m not sure if its a bug through Unity or what.

@Jcruz0921 As I realize you want to add a force to Ruby by hitting a key.I think this will help.

First you need to make slots like this.
public Rigidbody Rb;

public float forwardforce = 2000f;
public float sideforce = 500;
public float backwardforce = 1000f;

We don’t need void Start.After that write your script like this.

void FixedUpdate()
{ // Adding force to game object
Rb.AddForce(0, 0, forwardforce * Time.deltaTime);

    if(Input.GetKey("d"))
    {
        Rb.AddForce(sideforce * Time.deltaTime, 0, 0, ForceMode.VelocityChange);

    }
    if (Input.GetKey("a"))
    {
        Rb.AddForce(-sideforce * Time.deltaTime, 0, 0, ForceMode.VelocityChange);
    }
    if (Input.GetKey("s"))
    {
        Rb.AddForce( 0, 0, -1000);
    }
    if (Input.GetKey("w"))
    {
        Rb.AddForce(0, 0, 1000);
    }

Hope this will help you.