First of all, your question is too general.
This is a high-power unit built in several types of wind farms. CEI1, 2 or 3?
What type of tower shape is used, firm type? Conical tubular? (The latter is more common, but the former is also used)
What is the geological condition of the wind farm? The foundation is naturally different depending on the geological conditions. If you are responsible for this, you need to find a qualified design institute.
Furthermore, even for wind farms of the same power and level, large manufacturers (those with real design capabilities) will generally provide towers of different heights depending on the topography of the wind farm and other characteristics.
I'll give you an example that I encountered:
The 2 MW conical tubular steel tower used in IEC2 wind farms is 73 meters tall and has threesections, with an upper diameter of 3.1 meters and a lower diameter of 4.2 meters. The thickness of the walls in different places is 12-28 mm, and the weight is 130 tons. The foundation depends on where it is built. Typically, the total quantity of reinforced concrete used amounts to several hundred tons.