Simple 3D movement for a sphere

Player.cs

public class Player : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        Vector3 playerPos = new Vector3(-Input.GetAxisRaw("Vertical"),0 , Input.GetAxisRaw("Horizontal"));

        GetComponent<Rigidbody>().velocity = playerPos * Time.deltaTime * 100.0f;
    }
}