Mailchimp signup code

I want to add a SignUp which connects to my Mailchimp using their code below…

script id=“mcjs”>!function(c,h,i,m,p){m=c.createElement(h),p=c.getElementsByTagName(h)[0],m.async=1,m.src=i,p.parentNode.insertBefore(m,p)}(document,“script”,“https://chimpstatic.com/mcjs-connected/js/users/2c97a2eb71a5b0fc16a5220ff/9d0237ba0d821eb173e59d94f.js”);</script

not sure where do I paste it ? am using Source.
How does it work cos I don’t see anything on the page once uploaded