For those people who have a low score, anything below 450 and they don't expect the score to rise going forward then it might be a good idea to learn french. This is especially helpful for those who have a couple of years.
Of course, it is not easy and you will have to put in hard work, but French is one of the easier languages out there if you already know english. With regular work one can definitely reach intermediate level in a couple of years. And it will be a HUGE advantage here in Canada. Besides, who knows, it might even open doors in France. Worth a try for those willing to invest in themselves and up to the challenge.
I must add that you only get substantial points if you score intermediate level in all 4 areas, i.e. listening, speaking, writing, and reading. But I also want to say that it can be done. Heck, in 3 months of just putting half an hour a day i had reached a level where I could read children's graded series books and i am pretty sure that with more effort i would have reached an intermediate level in 1.5 years. You get at least 30 points for intermediate level (almost nothing if you score below intermediate though so it has to be at that level).