You have to install your domain on Dreamhost. After that, you have to install your website here and WordPress is a great option for this.
For this, you have to click on ‘One Click Install’, which will appear in the navigation menu on the left side of DreamHost.
Keep scrolling through this menu until you see the WordPress logo. Click the WordPress logo, it will give you the option of DreamHost One-Click Install: WordPress.
On clicking this, a pop-up window will open in which brief information about WordPress
In this popup window, you have to complete some procedures for a WordPress installation.
First of all, you have to choose the domain that you are installing WordPress to host.