If the advertisements displayed through AdSense are permissible and the business arrangement between you and AdSense is lawful, then there is no issue in benefiting from the earnings made through this work.

If you are concerned about the nature of ads being displayed, AdSense allows you to block haram ads such as those promoting gambling, alcohol, dating, and nudity. This can be done by configuring the AdSense settings to ensure that only permissible ads are shown on your website.

To block sensitive categories, you can:

1. Sign in to your AdSense account.
2. Click on Brand safety.
3. Select your product, for example, Content for AdSense for Content ads.
4. Click Blocking controls.
5. Enter the name of your site and click Search.
6. Click on the name of your site in the “Search sites” dialog.
7. Click Manage Sensitive categories.
8. Use the controls on the “Sensitive categories” page to allow or block categories. Changes are automatically saved.

By taking these steps, you can ensure that your use of AdSense aligns with Islamic guidelines, making your earnings halal.

Source: IslamWeb, Google AdSense Support

And Allah knows best.