There are a few reasons why you may not be seeing data or metrics for your ads:

• Your ad has just started running and metrics aren't yet available due to a short delay. These delays are normal.
• The date range that you're viewing is set to a time period when your ad wasn't running. Learn how to update the date range for what you're viewing in Ads Manager.
• Your ad isn't delivering. Get troubleshooting help on ads that aren't getting results.
• You've altered your tracking specs or copied an ad containing altered tracking specs.

If your ad is new, try checking again a bit later to view your metrics. Ad delivery/results may not happen straight away.

* Nguồn: Facebook