I gave my link in the html element an id of link. Adjust yours to your needs and then the link id in the code to reflect that.
You'll need to find the id of the div containing your check box. Mine was item1. Adjust the code to reflect your id name.

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
var jQ = $.noConflict(true);
// version 1
jQ(document).ready(function () {
jQ('#docContainer #item1').hide();
jQ('#docContainer #link').on('click', function() {
jQ('#docContainer #item1').show();

});
});</script>