* If you mean a perfectly symmetrical top spinning on a frictionless surface: This would be a periodic motion. The top would rotate at a constant rate, completing a full revolution in a set amount of time.
* If you mean a real spinning top in the real world: This would be a non-periodic motion. Real tops experience friction, which causes their spinning rate to slow down over time. They also wobble and precess (change the direction of their axis of rotation) making their motion complex and not perfectly repeating.
So, the answer is:
* A perfect, frictionless spinning top is periodic.
* A real-world spinning top is non-periodic.