How to enable TLS connection for my remote redis server?

I followed this tutorial to install redis on my linux vm. First of all, redis has bind address fixed to only localhost(127.0.0.1) so it won't connect from my local computer. What is the use-case here? Why would people only restict redis usage to inside the VM just because of some security vulnerabily because I dcan't see the use-case here.
Secondly I need help enabling TLS for my redis connection as it is publicly available. I came across the official doc and they shared script file location as if the files are already there. I couldn't find a thing regarding this.
Any help is appreciated