AdSense 

If you have an authorized account on Google AdSense, you can link it to Google Analytics and view its tracking information among reports of Google Analytics WD plugin. 

Open your Google Analytics account, choose the account you want to link with AdSense and navigate to Admin tab. You will see AdSense Linking option under Product Linking settings. Open AdSense Linking and click on New AdSense Link button. 

Afterwards choose the necessary AdSense account you’d like to link with your Google Analytics, then click Continue. Choose the views of Google Analytics, where you would like to have AdSense data. The accounts will be connected after clicking Enable Link and then Done. 

Google Ads

Firstly make sure you have a Google Ads account. Open your Google Analytics account, choose the website you are tracking and go to Admin. Click on Adwords Linking from Product Linking settings. 

After toolbox opens, make sure all the necessary Ads accounts are marked as checked and click Continue. Provide Link group title and click Link Accounts after enabling necessary link groups for Ads Tracking.