According to the BC government:
The consequences of driving without a valid driver’s licence are
severe in this province. As a deterrent to individuals who continue to
drive illegally, the consequences ramp up.
1st time – The first time police find you driving unlicensed, you will
receive a violation ticket for driving without a valid driver’s
licence. You will not be permitted to drive the vehicle any further on
2nd time – When found a second time driving without a valid driver's
licence, the notice on your driving record will inform the police that
you have a previous 'No Driver’s Licence' conviction and state they
will immediately impound the vehicle you are driving for seven days,
whether it is owned by you or not. You will immediately be prohibited
from driving. The driving prohibition period is indefinite – it will
continue until you get a valid B.C. driver’s licence, meeting all
other licensing requirements you may have had placed on you, such as
paying any and all outstanding traffic fines.
Subsequently: If you continue to operate a motor vehicle after being
prohibited from driving, you will be charged with ‘Driving While
Prohibited’ which is punishable by a $500 fine and up to six months in
jail for a first offence.
There are more pdfs of the fines etc at the bottom of the page.
It's also worth noting a potentially more critical implication - if your license has 'expired' (as in you've been more than 90 days without changing it), you essentially have no license (as above). What this means though, is in the event of an accident, you WILL NOT BE INSURED. And that could be a far more costly experience than any small fine from the government, in the event of an incident.