Is there a rule for a website pages?. If yes, how many pages a website can have (Maximum) and how many (Minimum)
Content is the king it's up to you can can create up to 3-4 pages website and maximum limit is unlimited as long all content are unique and relevent to your site topic
There is no hard and fast rule for pages of a website. You can design or create number of pages if these are required according your needs.
Minimum two pages, because your one page existence is not a website. Maximum, no limit. Even sky is not limit Did you see wikipedia.. Anyone will tell how much pages it has.
You can include as much pages as much you want. But you have to promote all the pages so you should create pages which you can handle.
You have to remember though that although there is no limit as to how many webpages you can have, you have to be careful that your server for your website doesn't slow down to much. Lets say for instance you had a small, but slow dedicated server for your forums, and every day thousands of new pages are being added to your forums. Then you will soon have to update to a faster server because the slower one will start to really struggle and therefore your page load time will take far longer!
Your all Free %100 to make pages as you can ,, but believe that every page with unique and good content you will create will help you alot to get rank at search engines and get more visitors.
Minimum of single page and maximum of unlimited pages. Just saw a video of Mattcutts from Google explaining how to create a sitemap for a website with 100,000 pages