focus point in photography are zones on the camera sensor that are sensitive to changes in the imagine for example if you take a picture of a flower in a field the field will be blurry whilst the flower will be in focus, so the flower is the focus point.
what’s the point for focus point they help draw the eye to the interesting or point of the imagine and helps make the imagine “pop” choosing the right focus point is crucial in order to make the photo make sense you main want a different colour or light to be the focus point not a field or a dull wall.