Hi ,
As suggested by Thomas, You can use the pass the below code in custom code section of each experience variation of the test to fetch the experience ID etc.
<script type="text/javascript">
var sCampaignName='${campaign.name}';
var sExperienceName = '${campaign.recipe.name}';
var scampId='${campaign.id}';
var sExpId=${campaign.recipe.id}'
alert("Your Campaign name is " + '${campaign.name}' + " :Your Experience name is "+ '${campaign.recipe.name}'+" :Your campaign Id is "+'${campaign.id}' +" :Your Experience ID is "+ '${campaign.recipe.id}' );
</script>
Regards
Parit Mittal