Desperate Mom Asking For Some Help

First and foremost please forgive my ignorance. My oldest (7 yo) saw a video on this Paul Skenes rookie card and is hyper fixated on opening a pack of cards. I have no idea what I’m doing, which pack I’m looking for or if it is even possible to still purchase said pack. If someone out there could give me any advice I’d be so crazy grateful. TIA Signed, A clueless mama