Counting ticked checkboes

You didn't give us enough info to go with. Let's say you have named your checkboxes in sequence,

Check Box1-5 for example, you can use this custom calculation script in a text field to count how many checkboxes are checked:

var Checked = 0;
for(var i=1; i<=5; i++){
var check = this.getField("Check Box"+i).valueAsString;
if(check !== "Off")Checked++;}
event.value = Checked;