Передача значения переменной из одного скрипта в другой по условию?

public class ProductCatalog : MonoBehaviour
{
    [System.Serializable]
    public class Product
    {
        public string name;
        public Sprite image;
        public float price;
    }

    [System.Serializable]
    public class Category
    {
        public string categoryName;
        public List<Product> products;
    }

    public List<Category> categories;

    public TMP_Dropdown categoryDropdown;
    public Transform productGrid;
    public GameObject productItemPrefab;

    void Start()
    {
        PopulateCategories();
        categoryDropdown.onValueChanged.AddListener(delegate { DisplayProducts(categoryDropdown.value); });
        DisplayProducts(0); // Отображаем первую категорию по умолчанию
    }

    void PopulateCategories()
    {
        List<string> options = new List<string>();

        foreach (var category in categories)
        {
            options.Add(category.categoryName);
        }

        categoryDropdown.ClearOptions();
        categoryDropdown.AddOptions(options);
    }

    void DisplayProducts(int categoryIndex)
    {
        // Очистить старые элементы
        foreach (Transform child in productGrid)
        {
            Destroy(child.gameObject);
        }

        Category selectedCategory = categories[categoryIndex];

        foreach (var product in selectedCategory.products)
        {
            GameObject item = Instantiate(productItemPrefab, productGrid);
            item.transform.Find("ProductName").GetComponent<TMP_Text>().text = product.name;
            item.transform.Find("ProductImage").GetComponent<Image>().sprite = product.image;
            item.transform.Find("ProductPrice").GetComponent<TMP_Text>().text = "$" + product.price.ToString("F2");
          

        }
    }
}

И второй

public class Stock : MonoBehaviour
{
    //Phone

    public int _display;
    public int _speaker;
    public int _microphone;
    public int _case;
    
   

}