Using Bluehost server, I’m unable to register my wp blog?

Have you pointed your domain’s name servers to Bluehost name servers?

https://helpdesk.bluehost.com/kb/index.php/article/1

Thank you, this should take care of the problem. A follow up question, why can’t I find a “Post” icon on my blog page options so that when someone comes to my blog “Authors” can see an icon to post not just make a comment?

Typically authors login in, then write a post.