Am I eating the correct amount of calories?(please help)?

Im a 17 year old male, im approximately 6'0 and 163 pounds, i usually eat around 2000-2500 calories a day. I work at winn dixie (im a baggy boy) so im walking around the store for about 4-5 and a half hours, when i don't work i walk around my neighborhood about 6 times and this usually takes me about a hour and half.