It means that your tank is still cycling. Do you currently have fish in it or are you doing a fishless cycle? If you're doing a fishless cycle, it means you are progressing.
If you have fish, you need to be doing daily water changes of 30 to 50 percent. You really need to get tha ammonia reading under .5. It (along with nitrite) should optimally be at 0 but during cycling, that is impossible. What size tank do you have and what fish do you have in it?