Your reservation status keeps you updated on all kinds of things, such as whether you're confirmed or need to do something like verify your ID or leave a review. To check it, either find the message thread with the Host in your Trips and click or tap Show more trip plans, then Show details.
A Confirmed status means you’re good to go! You’ll receive an email saying so, along with a text (SMS) and a push notification if you have those set up.