I am new to unity and I am trying to make a game, but the only error that is popping up says "Unexpected symbol 'void', but the only place void is, is before the void Update (). can anybody help?

This is the code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Paddle : MonoBehaviour
{
public float paddleSpeed = 1F;
public Vector3 playerPos = new Vector3(0,0,0);
}
void Update ()
{
float yPos = gameObject.transform.position.y + (Input.GetAxis (“Vertical”) * paddleSpeed);
playerPos = new Vector3 (-20,Mathf.Clamp(yPos, -11,11),0);
gameObject.transform.position = playerPos;

}

}

There should not be any curly bracket after the member variabels public Vector3 playerPos = new Vector3(0, 0, 0); }
You end the class Paddle with that end culy bracket and the compiler thinks that you are trying to enter a new class in the following line and gets confused.
Below is the corrected code:

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

public class Paddle : MonoBehaviour
{
    public float paddleSpeed = 1F;
    public Vector3 playerPos = new Vector3(0, 0, 0);

    void Update()
    {
        float yPos = gameObject.transform.position.y + 
            (Input.GetAxis("Vertical") * paddleSpeed);
        playerPos = new Vector3(-20, Mathf.Clamp(yPos, -11, 11), 0);
        gameObject.transform.position = playerPos;
    }
}