There is no set "TIME" to cycle a tank. You need ammonia to build up to feed the bacteria you are trying to seed in the system. Once there is ammonia, the bacteria colony will grow. Once you have enough bacteria going, they will be able to break your fish waste down. That is the idea behind 'cycling' a tank.
If you want to help it start, add a bit of ammonia chloride to help get the colony started.
When looking at your numbers, you'll see a peak in ammonia, then a peak in nitrite, then nitrate. Once you see ammonia drop to close to zero and nitrate kick in you're ready.