To submit your sitemap to Bing, you need to use the Bing Webmaster Tools. Follow these steps:
Create your XML sitemap: A sitemap is a file where you provide information about the pages, videos, and other files on your site, and the relationships between them. There are many online tools available to generate XML sitemaps.
Go to Bing Webmaster Tools: Visit Bing Webmaster Tools and sign in with your Microsoft account.
Add your website: If you haven't added your website yet, click on "Add a Site" button and input your website's URL then follow the authentication process.
Submit your sitemap:
4.1 Find and click on the 'Sitemaps' feature in the left-hand side menu under 'Configure My Site'.
4.2 Enter the full URL of the sitemap in the 'Submit a Sitemap' box.
4.3 Click on the 'Submit' button.
After submitting, it might take some days for Bing to crawl your website depending on the size of your website. You can check the sitemap reports to see if there were any issues during the crawling process.