It's very unlikely given:
* His image and brand: Al Pacino is known for his serious, dramatic acting roles. Sky adverts are usually lighthearted and comedic.
* His career stage: Al Pacino is a legendary actor with a long and successful career. He likely wouldn't need to endorse products in this way.
While there's always a possibility, it's very improbable. If you have a specific advert in mind, it's likely a misunderstanding or a fake ad.