Dreams don't mean anything. They are simply juxtaposed fragments of memories that get amalgamated together as different parts of the brain come back online from REM sleep.
Thats why dreams won't ever teach you a new foreign language, a higher math skill, or anything radically beyond the confinements of your current knowledge pool and instead, only leave you more confused and stumped about its meaning, context, or message because it isn't a message in the first place.