You can use it to "JUMP start" your car. If you can, then your car needs new battery.
If you are CAA member (or others), call them.
If it is battery problem, CAA can change it for you (more expensive than you go to your own garage). Or if you know how to change car battery, buy one at Costco (or Canadian Tire). Or ask CAA tow your car to ONION.
Since your car is old, besides battery, it can be starter, spark plugs, wires (between battery and spark plugs).