Can anyone tell me the price of an IPhone X in Canada?

If you mean any way to buy an iPhone X, you would need to go to some other Canadian retailer that may still have some X models in stock at this time.

Apple hasn't sold them for almost a year. So any stock at this point from 3rd party retailers is bound to be quite low if any are still available.

Any reason it needs to be the iPhone X?

Can it not be the iPhone Xs? or Xr?

Certainly not from Apple. I would be suspicious of any iPhone X models you might find claiming to be new, as they were discontinued last September.

You can see pricing for currently sold iPhones in Canada directly in the Canadian online Apple Store: iPhone - Apple (CA)

Apple no longer sells the iPhone X.