AdMob, YouTube, Blogger, and host partnerships
No data in your AdSense report
If no one has viewed your AdSense-enabled blog during the time period specified, then there will be no data available to report.
Additionally, data for new AdSense accounts may take up to 24 hours to display within the report under the Monetize | AdSense Overview tab. So if you are seeing the 'No data available' message, you may just have to wait a few hours for the data to become available.