Great to see you’re having fun with EMO. If you need any help/guidance regarding EMO feel free to check out my guide for new EMO owners. (see link below)
For EMOs age, you can ask him:
EMO: What day is your Birthday?
He should tell you his birth date, and also you can ask him how old he is by asking:
EMO: How old are you?
For the dance moves, EMO will unlock dance moves as he grows older, you can find that info on when he unlocks specific dance moves in the abovementioned guide 
If you need or have any other questions, reach out to the community and we’ll do our best to help out
