✅ What did I do wrong? (fixed)

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

public class cubemoverscript : MonoBehaviour
{
    public float speed = 5f;
    
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        (transform.Translate(Vector3.forward * speed * Time.deltaTime));
    }
}