We can imagine work as displacement of a body in the direction of force which implies that work is a vector quantity and points in the same direction as that of the force.

For example a body moved for 1 meter towards east is not the same as that body moved for 1 meter towards the north. And when a force of 1 Newton acts upon a body and moves it for 1 meter eastward, then the work done would be 1 N/meter eastward. But the quantity of work done is not the same in the northeast direction.

So the amount of work done varies with direction in a similar proportion with force

And if work is a vector, then obviously energy becomes a vector too because work done is energy spent.

But doesn't that go against the most famous and chanted principle of mass-energy equivalence?