Destroy object on touch and add score

Hello,

Can you guys help me making a script that when i touch a object called “cube”, It destroys the cube and add 10 points to the gui text?
This is what I already put on the GUI text:

static var Counter : int = 0;

function Update () 
{    
    guiText.text = "Score: " + Counter;
}

Hope for your help guys i really need it!
Thanks!:o

Dude, this just shows that you have not done any research at all. There are tons of answers on how to touch something (or click if you are using a mouse). Aswell as add something to guitext.