The amount of protein in a scoop of whey powder can vary depending on the brand and type of whey powder, but typically a scoop (usually measuring about 30g) of whey protein powder contains 20-25g of protein. The digestibility of protein is influenced by several factors including the processing method, the presence of other nutrients, and the individual's digestive system. On average, whey protein is considered to be one of the most highly digestible protein sources, with a digestibility rate of around 98%. This means that a scoop of whey protein powder would provide around 20-25g of absorbable protein, assuming a normal digestive system.