This is what to do: Navigate to the Bing homepage. Click on the four horizontal lines in the top right-hand corner. Click 'search history' once in the drop-down menu. On the next page, click 'clear search history' on the right-hand side.

If you want to delete your entire search history, go ahead and click the “Clear” button. If you don’t want to delete everything, you can also scroll down to view your search history. Under each individual search entry, you’ll notice two links, click “Delete” to get rid of just that search result.