You can use the onclick event of the button. Add JQuery and use the below code.

var cnt = 0;
$('#btn').on('click', function() {
  cnt++;
  if(cnt == 2)
    $('#lbl').hide();
})

OR, in vanilla js you can use

var cnt = 0;
document.getElementById('btn').onclick = function() {
  cnt++;
  if(cnt == 2)
    document.getElementById('lbl').style.display = 'none';
};

SOLUTION

Use Inbuilt JS event

There is event in JS ondblclick event which fires only on double clicked check the snippet below

function hide() {
  document.querySelector("label").style.display= "none";
}

<button  ondblclick="hide()" id="btn">Button</button>
<label  id="lbl">Hide me after Double clicking on button</label>

Code :

button = document.getElementById("btn")
label = document.getElementById("lbl")

button.addEventListener('dblclick', function(){
  label.style.display = 'none';
})

<button id="btn">Button</button>
<label  id="lbl">lbl</label>