You can view promo campaign reports after your content starts displaying. Click on View statistics on the campaign page. If you check these statistics regularly, you will know how well your content is performing to bring users to your site.
To get detailed statistics on all your campaigns and evaluate the effectiveness of specific keywords and ads, use Report Wizard.
For example, you can see how the selected keywords work. Go to Cross sections and select Ad №, Impression criteria and Type of impressions criteria, then go to Columns and select Clicks and Impressions.
Read more information about campaign statistics.