Do keys have different moods?
There's nothing inherent in the sound of different keys that conveys those specific moods.
How many moods in music?
The subjective experience of music across cultures can be mapped within at least 13 overarching feelings: Amusement, joy, eroticism, beauty, relaxation, sadness, dreaminess, triumph, anxiety, scariness, annoyance, defiance, and feeling pumped up.