saied, you want that primary fermentation to be about three weeks long. The initial phase of fermentation takes place in 3-5 days, but it is still going on after that. Get a hydrometer. When your specific gravity levels are the same three times in a row (over three to five days), then bottle. After you bottle and depending on the type of beer you've made (ale or a heavy stout, for example), carbonation can take 3 or more weeks. There's a good carb'ing thread (or three) on here if you search. Are you taking alcohol free beer and trying to use the yeast/sugar to give it alcohol? If that's the case, there might also be threads on here about that. What happens if you get caught with alcohol in Iran?