JSFiddle - React, Tailwind, and code Playground

HTML

<button id="btn">Нажми меня</button>
<div id="link"><a href="#ssilka">Ваша ссылка</a></div>

CSS

#link { display:none; }

JavaScript

document.getElementById("btn").onclick = function()
    {
        window.setTimeout(function(){
             document.getElementById("link").style.display = "inline";
        }, 3000 );
    }