You should add fish as soon as possible since you no longer add a source of ammonia to feed the good bacteria. They will starve and decrease in number quickly within days. So you need to just do several large partial water changes in a row right now and get your fish soon after, or you will lose your cycled bacteria colony. Once you have added the fish, they will produce ammonia to feed the bacteria. Or rather, the bacteria will be doing their job to keep the ammonia produced by your fish at 0ppm which is why you had to cycle the aquarium before getting the fish.
Make sure your filter media stays wet the whole time during water changes. Most of the good bacteria are in the filter media, and they must stay wet to be alive.
If you meant to use a hose to fill the aquarium, you must add Prime before add the new water. The chlorine in the tap water can kill the good bacteria and you do not want it to happen.
