[C#] The left-hand side of an assignment must be a variable, a property or an indexer

First off, I know there are a lot of questions regarding this error, but it seems that the error can come from different situations.

Hello everybody, I am trying to make a simple pong game. I have my script for moving the paddles, which worked fine. However I want the paddles to stop moving when I let go of the up and down keys. In my attempt of doing so, I added lines 22 - 25 in the code below (everything was working fine before I added these.) I get the error: "The left-hand side of an assignment must be a variable, a property or an indexer."

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Player1_Movement : MonoBehaviour {
 
     public float PlayerSpeed = 2;
 
     private Rigidbody2D rb;
     private Vector2 Movement;
 
     void Start()
     {
         rb = GetComponent<Rigidbody2D> ();
         Movement = GetComponent<Vector2> ();
     }
 
     void FixedUpdate () 
     {
         float Vertical = Input.GetAxis ("Vertical") * PlayerSpeed;
         Vector2 Movement = new Vector2 (0, Vertical);
         if (Input.GetAxis("Vertical") = 0)
         {
             rb.AddForce(Movement);
         }
         rb.AddForce (Movement);
     }
 }
 

Thanks for the help!