I m a beginner and I need help with a panel

     public GameObject panel;
     public GameObject[] panelParameters;
 
     public void TogglePanel () {
 
         //
         // This will make the panel hidden if it was previously on, and vice versa.
         //
         // The function will be called from an X button in the panel, and on a button to show the panel, Ex: a "Settings" Button.
         //
 
         if (!panel.activeInHierarchy) {
             LoadPanel ();
         }
 
         panel.SetActive (!panel.activeInHierarchy);
 
     }
 
     public void LoadPanel () {
         
         //
         // This function should be called in the start function, or it can be called when the settings menu is opened,
         // meaning on the TogglePanel() function where panel.activeInHierarchy is false;
         //
 
         for (int i = 0; i < panelParameters.Length; i++) {
 
             GameObject parameter = panelParameters [i];
 
             if (parameter.GetComponent<InputField> () != null) {
                 parameter.GetComponent<InputField> ().text = PlayerPrefs.GetString ("panelParameter_" + i);
             }
 
             if (parameter.GetComponent<Toggle> () != null) {
                 parameter.GetComponent<Toggle> ().isOn = intToBool(PlayerPrefs.GetInt ("panelParameter_" + i));
             }
 
             if (parameter.GetComponent<Dropdown> () != null) {
                 parameter.GetComponent<Dropdown> ().value = PlayerPrefs.GetInt ("panelParameter_" + i);
             }
 
         }
 
     }
 
     public void SavePanel () {
 
         //
         // This function should be called each frame, or for better performance every time you change a value in
         // the settings. Can be done using the OnValueChanged() on most Buttons, InputFields, Toggles, and Dropdowns.
         //
 
         for (int i = 0; i < panelParameters.Length; i++) {
 
             GameObject parameter = panelParameters [i];
 
             if (parameter.GetComponent<InputField> () != null) {
                 PlayerPrefs.SetString ("panelParameter_" + i, parameter.GetComponent<InputField> ().text);
             }
 
             if (parameter.GetComponent<Toggle> () != null) {
                 PlayerPrefs.SetInt ("panelParameter_" + i, boolToInt(parameter.GetComponent<Toggle> ().isOn));
             }
 
             if (parameter.GetComponent<Dropdown> () != null) {
                 PlayerPrefs.SetInt ("panelParameter_" + i, parameter.GetComponent<Dropdown> ().value);
             }
 
         }
 
     }
 
     public int boolToInt (bool input) {
 
         //
         // Returns an integer (1/0) based on a bool (true/false) input; Due to the fact that there is no
         // PlayerPrefs.Set/GetBool();
         //
 
         if (input) {
             return 1;
         } else {
             return 0;
         }
     }
 
     public bool intToBool (int input) {
 
         //
         // Returns a bool (true/false) based on an integer (1/0) input; Due to the fact that there is no
         // PlayerPrefs.Set/GetBool();
         //
 
         if (input == 1) {
             return true;
         } else {
             return false;
         }
     }

Final thoughts:

-This took me WAY too long to do :)

-Please fix basic compiler errors if there is some... :)

-Use a LayoutGroup on the panel, so that all of the parameters are lined up nicely

-You can set panelParameters from panel's children, but it is more resource intensive and takes more time in the long run.