A lot, at the moment!
I don't usually drink a lot of milk, except in tea (about 6 cups a day until a few months ago), although over the summer I used to have a mug of cold milk with marshmallows before bed. And then I've been struggling with anorexia and restricting liquid calories for months now.
But I'm in an EDU now, and having a lot of milk! 150mls with cereal if I choose that for breakfast, 200ml cold milk for morning snack, 200ml cold milk for afternoon snack, and 200ml hot milk for night snack (although my meal plan changes tomorrow so I will be having either 200ml of hot chocolate, milkshake, hot milk with 2 sugars, or 300ml milk instead). I've grown up with skimmed milk all my life, and here it's semi-skimmed I think, but it's absolutely lovely, I have to say I actually look forward to drinking it at the moment.
Love milk.