For the age question I believe it is now 16 again, but I'm not 100% sure.
Also where do Pres recruits do their BMQ?
Somewhere within the geographical area, it could be done at the unit amouries, a Candian Forces base/training center (depending on proximity). Quite honestly I wouldn't stress too much about this as there are multiple locations where it could be held depending on where you live and what facilities are available for you. You could ask the unit that you apply to as you need to get a letter from them prior to initiate the application process.
In order to apply I have to send my transcript to the force do I have to send my provincial exam score too?
Ask the CFRC however I suspect just the grade 10 transcripts though.
What are the chances of joining the reserve with a grade 10 education?
There is no way to know until you apply, but I know many people who got in with just grade 10, I wouldn't worry about it. Though some trades require grade 12, but these are of a more technical nature.
Do I need both my parent's consent? my parents are divorced and don't live in the same country ;(
Just one (my parents are divorced as well >
)
If I got accepted, and going for my BMQ, am I going to miss a lot of school?
There are full time basics run throughout the summer and part time basics run on the weekend during the school year. Either way you shouldn't miss any school, though some students find it challenging to balance their studies (i.e marks drop) as you will be gone from Friday night to Sunday Evening roughly two times a month. However if you do the school work before you go away you won't have a problem. In fact my highest marks in University were when I was doing my basic as I knew I couldn't waste any time.
Good Luck