How do I rapidly soften cream cheese?
Seal it in an airtight zip type bag, squeezing out as much air as possible.   Submerge the cream cheese under lukewarm water for several minutes, until softened, which you will be able to feel through the plastic.

You can also microwave it on low--but do it slowly, and check it frequently, taking off softened portions so that they don't overheat and melt.