Yes humans do have some canine teeth.
The canine teeth that humans have are small canine teeth that project just slightly beyond the level of the other teeth so and thus in humans alone among the primates, rotary chewing action is possible.
Humans have 4 of those canine teeth.
The 4 canine teeth that humans have are one in each half of each jaw.
The canine teeth that humans have are very important to help us chew the food we eat.
We could likely get by without the canine teeth we have as humans but the canine teeth in humans are very helpful in chewing out food properly.
It's also very important to take care of the teeth we all have because once we lose our adult teeth we cannot get them back.
Then we would have to have dental implants or dentures to eat most of the other foods we enjoy.