Once you’ve set up your Bluehost account and installed WordPress, the initial method to access your WordPress interface is via the My Sites section of your Bluehost account page.
But you can bypass this unnecessary step and access your WordPress interface directly by following these instructions.
Go to Bluehost.com to log in to your account. Utilize the primary domain name and password associated with your account, which can be found in a Welcome to Bluehost! email in your inbox.
Click on My Sites on the left-hand side menu and click Manage on the WordPress site that you want to work with.
Go to the Users tab and expand the menu on the right-hand side next to your Admin username and click on Edit Profile.
You will land on the User page for the Admin user where you can update the email address and password. You may receive some emails asking you to confirm the email and/or password changes before these updates are finalized.
Moving forward, you will be able to access your WordPress installation directly by going to www.yourdomainname.com/wp-admin. This will save you the extra step of having to log in to your Bluehost account every time you want to work on your WordPress site.