The Earth is very very very close to being a perfect sphere.
Not mathematically perfect. If you want to get really technical about it, the Earth is actually an oblate spheroid. But it's so close to being a perfect sphere that if a perfect sphere were placed next to the Earth and you looked at them both at the same time, you couldn't tell the difference.
To the extent of our ability to visually perceive the difference between the shape of the Earth and a perfect sphere, the Earth is very very very very very close to being a perfect sphere.