Study for Unity that Charactor moving forward and back.

UnityChan.cs

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

public class UnityChan : MonoBehaviour {

    public float speed = 1f;

    Animator animator;

	// Use this for initialization
	void Start () {
        animator = GetComponent<Animator>();
	}
	
	// Update is called once per frame
	void Update () {
        float h = Input.GetAxis("Horizontal");

        animator.SetFloat("Speed", h);
        // Vector3 v = Vector3.right * Time.deltaTime * h * speed;
        Vector3 v = Vector3.forward * Time.deltaTime * h * speed;
        transform.Translate(v);

	}
}