Weight of an object is:
less at the equator and greater at the poles
The gravitational force between two objects is inversely proportional to the square of the distance between them.
The weight of an object is less at the equator and greater at the poles because the distance from the centre of the Earth to the surface is maximum at the equator and is minimum at poles.
As the distance at the poles is less the gravitational force (weight) is high.