It will be a bit different when babies are formula fed as it's a different food and there's a tendency to be parent-led, rather than based on the baby (though you can certainly demand feed and pace feed, so baby decides when and how much to eat), but what's normal for infants is to feed 8-12 times in 24 hours and at irregular intervals. If your baby is growing and developing as expected, you can simply feed them as often and as much as they wish (when bottle feeding you can use pace feeding techniques to avoid overfeeding, which can be a problem when using bottles).
Crying is a late sign of hunger, and with time you might see other, earlier signs that she's hungry.
If she's hungry, obviously it's better to give her a feed than a dummy; you'll figure out with time and through trial and error which is required. The exact numbers are not so important as how she's going, if that makes sense.