Upgrade the AdSense account that's linked to your AdMob account to show ads on your own site
When you signed up for AdMob, we also created an AdSense account for you to send you payments. If you have your own site that you want to monetize, you can apply to upgrade your AdSense account by adding "AdSense for content". After your account is upgraded, you can earn money by displaying Google ads on your site.
To show ads on your own site: