Cant upload dwloaded theme

Is racheldalephotography.com your domain? If so, it is routed to WordPress.com and not to BlueHost, so you won’t have an option to upload your own custom themes. If you want it hosted on BlueHost, you will need to have your domain’s NameServers pointed over to them. Make sure to get a backup of your content first so you can import it onto the new site if needed.