Use Squarespace domain for WordPress site.

I am going to start of by saying I don’t know a lot about web development and that is why I am doing this project. I used my Raspberry Pi to host a web server running WordPress. I bought a domain through Squarespace (quantumpie.net) and am trying to link it to my site but can’t get it to. I have done a lot of goggling and contacted Squarespace’s support and they told me that WordPress will give me values to enter into my DNS but I can’t find that anywhere (and I have no idea what that even means). If anyone can help me figure this out it would be greatly appreciated!