increase decrease score on multiples button click problem

i want to increase the score by 1 when i click button and the transparency of image change and want to decrease the score by 1 when i again click button and transparency change to default. Here is my code of button transparency change: public class ButtonInteractable : MonoBehaviour { public GameObject image;

 public void TransparencyButton()
 {
     if (image.GetComponent<Image>().color == new Color32(255, 255, 255, 255))
     {
         image.GetComponent<Image>().color = new Color32(255, 255, 255, 150);
     }
     else if (image.GetComponent<Image>().color == new Color32(255, 255, 255, 150))
     {
         image.GetComponent<Image>().color = new Color32(255, 255, 255, 255);
     }
 }

}

And here is my score script which is added on buttons on click event:

private Text count; private int countAmount;

 public void Start()
 {
     countAmount = 0;
     count = GetComponent<Text>();
 }
 // Update is called once per frame
 void Update()
 {
     count.text = countAmount.ToString();
 }
 public void AddScore()
 {
     countAmount += 1;
 }