Sign in to your account on Bing Webmaster Tools. ...
Add and verify the site that you want to get information for through the APIs, if not already done.
Click on Settings button on top right corner and then go to API Access section
It provides services such as web, image, maps, and video, etc. Bing Ads is the name of their advertising service but recently was renamed 'Microsoft Advertising' in 2019. This is because Microsoft's ads can now serve on Bing, Yahoo, caldaia elettrica MSN, and AOL networks.