Preparing my domain for a week now

I bought the domain at Google Workspace, and they suggest using Squarespace to easily build a site, so, as I’m a noob, I tried it. The result was not what I had expected, so I decided to dedicate a little more time and attention to the process, and created a site myself (with AI help, of course), but now I can’t seem to be able to transfer it here.
The Domain Blocking is turned off, and I’ve even received a code to be used on the transfer, but I ahve no idea where to put it, or even if you require it at all.
What should I do?

Netlify site name: brain-hacker.netlify.app
Custom domain: brain-hacker.com

@BrainHacker I believe you’re confused as to what you’re doing.

You cannot “transfer a domain name to Netlify”, as you would between registrars.

See this thread for more information:
https://answers.netlify.com/t/support-guide-how-do-i-transfer-my-domain-name-to-or-away-from-netlify/186

What you can do, (and I think you’re actually trying to do - based on your screenshot), is either:

or

See the documentation provided.
Feed it to the AI that you’re using if you must, just be aware they sometimes provide misleading info.