Dreaming about a cornucopia may indicate the person is trying to hold on to good habits and traditions in their desire to reach great heights and indulgence.
Seeing a cornucopia in a dream signifies abundance, prosperity, and fertility. There is plenty of whatever you need, you will no longer struggle to put food on the table.
It could also symbolize the lavishness of nature such as fruits and vegetables implying that those who interacted were thriving in doing so or sometimes the meaning is quite literal with harvest related scenarios, at times representing a full idyllic abundance in one’s life.