How many rotational symmetry does a cuboid has?

Answer 1

None normally because rotational symmetry is only applicable to 2 dimensional shapes such as polygons.

Answer 2

Oh, dude, a cuboid has infinite rotational symmetry. I mean, like, you can rotate that bad boy any which way and it'll still look the same. So, you can spin it around and around until you get dizzy, and it's still gonna be a cuboid. Cool, right?