Yes, after completing the challenges, there will be a piece paper you can print out.
Does it mean much? Not really. The important thing is what you learned and what you built. Most employers aren’t going to care much about a cert from a self-guided, online boot-camp that works on the honor system. I mean, I put them on my resume - why not. But they were more interested in the things that I’d learned and what I could do.
The certs are nice milestones and you should feel proud of them. And yes, you get one once completing each certification.