Chances for Mcgill, UBC, UToronto with these scores?

Okay okay so I know that I majorly messed up my standardised tests and this aint good. I got my results back for the two SAT IIs and I just didnt seem to quite do well.

Math IIC: 680
Physics: 630

I have no idea how I did this terrible. I am not a bad kid at school although I didn’t give a 50 cent about my grades until the second semester of 10th grade(yeah a slap in the face in junior year). I self studied my butt off despite skipping precalc(went straight into AP calculus bc) and not even knowing the whole AP Physics 2 material but these scores are alarming. I am currently an International student studying in a US Highschool programme, and a rising senior. I know that those two scores are just not quite there yet in general, but how would my chances be for Mcgill, UBC and uToronto?

GPA:
UNWEIGHTED culumlative GPA for 9-11 is 3.5
UNWEIGHTED 11th grade GPA is 3.9(i got like 3.8 in first semester and 4.0 for second)

SAT:
NEW SAT 2016 1350/1600
ACT: 29

All three Canadian schools that you list are pretty much sink or swim. Unless you get your act together you will likely fail if you manage to be accepted.