1)most MBA programs provide some kind of scholarships or fellowships, but it is very competitive. Don't expect the scholarship can cover all your tution in most cases unless you are very terrific. Most schools offer student loans. Please check online.
2)It really depends where you will be living. For example, living in NYC is much more expensive than living in a small city. Range: $8000-20000/year.
3) You can do internship in the summer after first year study. Usually, it is a 10-week program and can make some $.
4)No requirement on scores. The higher the better. | 
