Have you registered with Airbnb to be registered as a cohost under their scheme (not sure if it operates where you are) ? @Jaishree3
If you want to promote your cohost business you can set up your own marketing channels on social media and a website and invest in targeted advertising to reach hosts you've identified as your target market.
Thank you for leaving your question in the Community! I'm going to share a link with you where you will be able to join the Community Co-Host network. There, hosts will be able to find you more easily! This is the link: Join the Co-Host Network.