Depending on how long it has been since you last logged in, @Bonnie361 , there is a newish step on the home page. When I go to the site, I see what you see -- a page that thinks I am a guest and not a host and that will let me sign up as a host. But if I wait 10 to 30 seconds (depending on how slow my internet is at the time), a "switch to hosting" link will appear at the top right of my browser window. If you click on that, you will be back to your hosting dashboard.
Or you can add "/hosting/p/home" to the URL. For instance: airbnb.com/hosting/p/home
However, there might be something else going on for you. The profile from which you are writing is brand new with "null" in location and no reviews. This is odd for a superhost. Is it possible you have inadvertently created two accounts? That would explain why there is no acknowledgement that you are a host.