Do you mean from a proper Pie n Mash shop?
I'm not sure how many points but I o know its really rather naughty haha.
A pie might be about 10 (maybe higher, not sure, mash about 6? I'm not sure about the liquor though.
I can tell you though if it's your only really naughty thing in a week you should be fine, I still have it quite a bit and am still losing weight (I get a big point allowance).... good luck!!!!