How many watts of light bulbs are used for still life photography? How many/much?

Try to use high-power lamps, so that the brightness is high. You can adjust the aperture to control the exposure and depth of field. For low-power lamps, a large aperture must be used to ensure accurate exposure. Sometimes the depth of field is too shallow to control the effect.

You can use less lighting if the power is high. Lighting can be divided into main light, paid light and modeling light.

Still life photography is very particular about using light, and there is a lot of knowledge in it.