Earning shouldn't be your primary reason for joining Hubpages. The main reason people join Hubpages is because they are passionate about writing and want to share their work with the world. If that's your aspiration then you're in the right place.
Talking in terms of money, you may if you're talented and lucky earn a small amount each month. However, this can take many months if not years in order to gain enough content and traffic to turn words into revenue.
Welcome and good luck.