Jewish depictions of heaven as a place where humans go upon death are
few, and depict it as a place where Jews spend eternity studying the
Written and Oral Torah.
Jewish depictions of hell as a place humans go upon death are even
fewer. According to most depictions, upon death, Jews who have sinned
spend up to twelve miserable months in gehenna before going to heaven,
although some accounts suggest that certain classes of sinners never go
(It's the "twelve miserable months" that's so lovely.)
Did you know that is the reason that one says Kaddish for 11 months after a
parent's death? A common explanation for saying Kaddish is that it helps
the soul escape Gehenna; but if one said it for 12 months one would be
insulting one's parent by implying that they were evil enough to spend the
full time there.