not yet… but you go in a right direction
it’s likely still in the tube where dipstick goes and maybe you can even get it off with some kind of thin and rigid (opposite of soft) metal wire with an improvised mini-hook at the end
worst what will happen if it falls to the oil pan is: once you start the engine, this paper and plastic will stick to the metal mesh protecting the intake/pickup tube to the oil pump, most likely not causing the damage, but not improving your oil flow for sure
if it gets to the oil pan, the best would be not to start the engine, but to drain the oil (into the pan) right where car is parked now, as it will most likely make that paper/scotch to flow out, then fill with a new oil