Your motor has 2 coils inside, these are called (for example) coils 1 and coil 2. Each coil has 2 ends, these are called A and B so you have 4 connections, call them 1A 1B 2A 2B. That is the standard notation that everyone uses for a 4 wire motor.

It is explained in the link I posted.

You normally want resistance test not continuity but it does depend on your meter and exactly what you are trying to do.