Paradise is a place often referred to when speaking of Heaven, but it could also represent a tropical destination or being in a state of delight and bliss.
Positive: Dreaming of paradise could represent God giving you a visitation and trip to Heaven. It could also be God showing you a hope for the future and giving you encouragement.
Negative: Dreaming of seeing paradise but being unable to enter could represent the threat of judgment or eternal damnation.
(Luke 23:43; 1 Corinthians 2:9; Luke 16:22-23).