controllin` cube in vertical and horizontal, the script must be in the cube component

cubeControll

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

public class CubeControll : MonoBehaviour {

    private float m_vert;
    private float m_horz;

    // Use this for initialization
    void Start () {

    }
	// Update is called once per frame
	void Update () {
        m_vert = Input.GetAxis("Vertical");
        m_horz = Input.GetAxis("Horizontal");
        transform.Translate(m_horz, 0f, m_vert);
	}
}