This will depend on your topic and how much content you intend to include on the topic. Some websites are hundreds of pages long while others only a few. If you have all your content, images, and links gathered you can get a website that is under ten pages up in a days time. But it will take longer if you need to first create/find graphics, organize content and such. Of course if the site is larger it will take longer to finish.
I can't honestly tell you how long it will take you to builds and publish your site. It is all depend on how much time each day you put on your site builds and what kinds of knowledge for web design do you have.
If you have no time to build your own site, there are many professional web designer out there are willing to help you build a beautiful and complete website to suit your business, but with how much you are will to paid. This is a good method for you if you don't put so much time to create or learn web design yourself. The fee range is from hundreds to few thousands or more.
And another is buy an establish web templates. This is another choices for you to start you web site and it is really save your time and also money. it is more easy way for you to just input your content into the finished web template and save time. But, make sure you modify the color or images of the template before publish it, or you may found somewhere else that has web site similar to yours. This might make your visitor feel that your content is duplicated. The price range is from few dollars to few hundreds depend on quality of the designs.
Before build your site, make sure you have a planning and topic for your website. It will make you less mistake and save more time on it.
