Hello dreamhost officers,may i buy a Dedicated Hosting IP for my hosting?
I’m not quite certin what you’re asking. Currently Dreamhost isn’t offering new dedicated servers them selves, but there is an offering through their hosting partner. See Here for more info on that.
If you already have dedicated service with dreamhost you should be able to request IP addresses through your panel.
Also, this forum is generally frequented by Dreamhost customers, if you want a reply from an official dreamhost person you should use the contact support form in the panel > Support > contact support.