To dream of a death sentence represents feelings about an inevitable failure or loss. You may be experiencing a crucial deadline you feel you can’t meet, experiencing an untreatable illness, or a unbearable wait for an embarrassment you feel can’t be avoided.
Alternatively, a death sentence may reflect feelings about the worst kind of punishment you could imagine. Your fear of the worst consequences imaginable. The ultimate sanction. Losing your job or being fired. A ruthless ending. Feeling permanently ostracized.