In order to ensure a good experience for users and advertisers, publishers participating in the AdSense programme are required to adhere to the webmaster quality guidelines. These guidelines provide many tips for creating sites that help to Google find, index and rank your website. In general, following these tips will help you to provide a positive experience for your users. The guidelines are quite extensive so we’ve highlighted some important information below:
Please bear in mind that participation in AdSense doesn't affect a website's rank in Google search results and won't queue its webpages for crawling by our main index bots. Publishers wishing to improve their ranking in the search results should visit our Webmaster Central and Search Console, which are available to all publishers.
Sites that don't meet these guidelines may be removed from the search index and have AdSense ads disabled. If this has happened to one of your sites, then you can modify your website so that it does comply with the guidelines and then submit your website for reconsideration.
https://support.google.com/adsense/answer/1348737?hl=en-GB&ref_topic=1261918
For example, let's suppose you own a movie blog, where you recently posted an article about your favorite actor. After publishing it, you notice that another website has copied and published your article without your permission. The owner of the other website doesn't respond to your requests to remove the content, and it is monetizing their pages with AdSense.
In a situation like this, where you believe that a site containing AdSense code is illegally copying your site's content, you can let us know by following the process described in our Help Center. It's our policy to respond to notices of alleged infringement that comply with the Digital Millennium Copyright Act and other applicable intellectual property laws.
The notice should be sent directly from the owner of the copyrighted materials allegedly being infringed (in the example above, that's you), as we are unable to accept third-party copyright complaints. Also keep in mind that we are unable to process copyright complaints received through the AdSense policy violation report form. Once we've received a notice of infringement, we will take appropriate action. If you'd like more information about our DMCA process, please visit http://www.google.com/adsense_dmca.html .
Additionally, if you find a site that is scraping (misappropriating and republishing) your content, you can report it for a potential violation of the Google Webmaster Guidelines. To do this, fill out the form at https://www.google.com/webmasters/tools/spamreport (you must be logged into your Google Account to access this form).