Movement Script in C# for Unity

Move.cs

private float speed = 2.0f;
public GameObject character;

void Update () {
		
		if (Input.GetKey(KeyCode.RightArrow)){
			transform.position += Vector3.right * speed * Time.deltaTime;
		}
		if (Input.GetKey(KeyCode.LeftArrow)){
			transform.position += Vector3.left* speed * Time.deltaTime;
		}
		if (Input.GetKey(KeyCode.UpArrow)){
			transform.position += Vector3.forward * speed * Time.deltaTime;
		}
		if (Input.GetKey(KeyCode.DownArrow)){
			transform.position += Vector3.back* speed * Time.deltaTime;
		}
	}

THANKS !!
It did, but it worked very slowly. I'll try another method. Thanks anyway! :)

making rigidbody a class in unity doesn't work for me. it gives me an error

the "vector3" in my visual studio it's not gteen, and it not works. please help!

hover on it and there will be a drop which is showing "using:UnityEngine" or something start with "using" tap on it but make sure you are using the lastest version of the unity.