To integrate Google AdSense, go to your website's Settings.
Then, go to the Integrations tab, insert Google AdSense code into the <head></head> part of your website, and click Save changes. To find your Google AdSense code, please refer here.
After pasting the code, go to the editor and update the website.
Pro tip: Remember to update your website every time any code or ID is added to, edited, or removed from your website.