Hi Hugo, I hope you are well!
If you have a Superhost co-host they will (hopefully) be offering your guests a Superhost experience, so this will help ensure you get great reviews, and hopefully increase your bookings and earnings over time.
If you add a co-host to your listing then your guests will see the co-hosts profile further down the body of your listing, and if they click on it to open your co-hosts profile they will then see they are a Superhost- plus you can mention it in the body of your listing if you wanted to.
Certainly, as you're a new host I am sure you'll find the experience of a Superhost co-host to be really useful in getting your listing off the ground without having to make any of the usual new host errors yourself.
Best wishes
Paul 🙂