my new cell_clicked.js
function cell_clicked(image) {
  image.src='counters/' + pick + '.png';
  image.setAttribute('cn',pick);
  var id=image.id;
  var row=parseInt(id/5);
  var arr=get_cns(row);
  var score=worth(arr);
  var element=document.getElementById('s' + row);
  element.textContent=score;
  pick=Random(9);
}
my new get_cns.js
function get_cns(row) {
  var arr=[];
  var id=row * 5;
  for (var i=0; i<5; i++) {
    var element=document.getElementById(id);
    var cn=element.getAttribute('cn');
    id++;
    arr[i]=cn;
  }
  return arr;
}

You should now have a playable game with two rows.
Modify index.html so that you have the planned five rows.
When you have finished playing, concentrate on what still needs to be done.