In general, everybody has five fingers on each hand. Just as everybody has five toes on each foot.
However, a distinction can be made between the thumb and the (other) fingers. Depending on how you view it, a thumb is a particular type of finger—or it's not a finger at all. But I think you would only view it as something other than a finger if you wanted to specifically distinguish it from the others.
Also, consider how they are named: thumb, index finger, middle finger, ring finger, and little (or pinkie) finger. You actually only have one of each.
Analogously, you could make a distinction between four toes and one big toe.
In the case of both fingers and toes, you can also use the word digit. That word makes no distinction between any of them.