How to Attach My Newly-bought Domain to a Wordpress Blog?

I bought the domain name, stormhawksociety.com, from Google Domains, but was unable to follow the directions, apparently, and could not get any aid from either Wordpress or Google Domains to straighten things, given nether have help hotlines to paying customers, apparently. Anyone have any advice for for me now? Apparently, you need to go through the domain site to attach, and not the host's, in this case, Wordpress. I did this once, but then a again, I may have done this with help...

How to Attach My Newly-bought Domain to a Wordpress Blog? WordPress ...