Please add the given script from wp-admin -> wplms ->footer -> google anaylitics code :
<script>
jQuery(document).ready(function($){
$('.unit_content').on('unit_traverse',function(){
$( 'body' ).delegate( '.unit_button.submit_inquiz', 'click', function(event){
$('body,html').animate({
scrollTop: 0
}, 1200);
});
});
});
</script>