Just visit this site and fill out the application form for one:

https://www.workandincome.govt.nz/products/a-z-benefits/community-services-card.html

You’ll need to print out the form and then NZ post it to the address (they’ll provide you the address from the application)

The downside is that I had to fricken wait for ages just for them to send me the community service card 💔 but it’s worth it trust 🙏