1. Do you sing often? In private or in front of people?
I do sing often! 
I sing mostly in private, but if me and my friend are listening to an awesome song, then I don't mind singing to it as long as she does too!
2. How would you rate your voice on a scale of 1-10?
I would say I'm a 7, but when I record myself and listen to it later, I'd say a 5 or 4 xD
3. Has anyone else ever commented on your singing voice in a positive way and what did they say?
No one really cares how I sound Cx So I don't get any feedback!
4. In a negative way? (I hope these answers are funny)
My brother says I suck! Only because he's jealous! ;D
5. What is your favorite kind of music to sing? Favorite song or artist?
Ooooo! I love singing post-hardcore music! My favorite bands to sing along to are Asking Alexandria, Suicide Silence, Sleeping With Sirens, Pierce The Veil, Black Veil Brides, and Bring Me The Horizon! I'm in the process of learning to 'scream'. c:
6. If not the same as above, what kind of music do you think you sound best singing?
I think I sound best singing Sleeping With Sirens songs, mostly because they're slowerish and I can focus on my voice.
7. What kind of music do you sound terrible singing?
Oh god, anything like Suicide Silence, only because I can't quite 'scream' yet!
8. Have you ever won any kind of award for singing?
No! xD
9. On a different hand, can you rap?
I want to say yes, but probably no 
10. And finally, is your singing voice higher, lower, or similar to your speaking
voice?
My singing is somewhat higher than my normal voice. I can change it easily though!