There's nothing special about .dev domains, other than they're automatically included on Chrome's HSTS preload list (so Chrome won't let you connect to a .dev website unless it has a valid HTTPS cert). If Bluehost says they "don't support" them, they probably don't know what they're doing.

This is what you'd typically do to point a custom domain (eg example.dev) that you've registered through one DNS-hosting company to a website that you've set up with a different web-hosting company:

https://docs.netlify.com/domains-https/custom-domains/config...

I have a .dev domain that is hosted through Google Domains. I _think_ that Google owns that TLD, or something. They run https://get.dev too.

There's nothing special about hosting a .dev domain except for the HTTPS requirement. .dev domains require you to enable TLS on your site.