Character movement via keyboard/controller input | Rigidbody | Unity Game Engine

Move.cs

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

[RequireComponent(typeof(Rigidbody))]
public class Move : MonoBehaviour
{
    public float speed = 5;
    Rigidbody rigidBody;

    void Awake()
    {
        rigidBody = GetComponent<Rigidbody>();
    }

    void FixedUpdate()
    {
        float inputH = Input.GetAxis("Horizontal");
        float inputV = Input.GetAxis("Vertical");
        rigidBody.velocity = new Vector3(inputH * speed, rigidBody.velocity.y, inputV * speed);
    }
}