Trigger a GUI when tapping and object in IOS

Hi I was wondering if there was away to activate an GUI when tapping an object on the IPad. I know how to load a new scene but i want to load the GUI over the game. Basically i want to create a character info GUI when selecting the character it will popup. I’m new to coding but trying my hardest to come to terms with it. If anyone can help with a script and send me in the right direction I would really appreciate it.

Many thanks

I think the easiest way to do this is to have conditionals like so

javascript : MyGUI.js

var hud : boolean = true;
var characterInfo : boolean = false;
var pause : boolean = false;

function OnGUI () {
    if (hud) {
        // show the hud
    }
    if (characterInfo) {
        // show the character info
    }
    if (pause) {
        // show the pause menu
    }
}

function Update () {
    // Turn them off and on however you like.
    if (Input.GetButtonDown("ToggleHUD"))
        hud = !hud;
    if (Input.GetButtonDown("ToggleCharacterInfo"))
        characterInfo = !characterInfo;
    if (Input.GetButtonDown("Pause"))
        pause = !pause;
}