Is There A Centre To Donate Sperm And Earn Money In Canada, Specifically British Columbia?

No. It is illegal since 2004 to pay for sperm or eggs in Canada.

If you are receiving money then you are not donating, you are selling. In many places they are only interested in contributions from persons of demonstrated mental and physical fitness - medical school students and the like. Considering that the simple difference between donating and selling has eluded you you had better hope that the payment rate is not based on a IQ test. I'd recommend you invest in an elbow brace and some burn cream before you start down this career path.

A time-honored alternative to a sperm bank would be to seek government employment - you do the same work but for better pay and with benefits.