Accumulating dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.
Interpretation 1 — Nancy Wagaman
Accumulating, saving, or stocking up on things can represent an actual, desired, or feared: Situation of having plenty or too much of something (such as money, possessions, or love).
Shortage of something, or a desire to avoid or compensate for one.
Preparedness (or lack of it) for the future.
Procrastination or postponing, as in “letting things stack up” while delaying action.
Letting things pile up emotionally (such as grudges, blame, or judgments) by not working through them.
Hoarding or keeping things for yourself (such as money) or to yourself (such as secrets).
See Increasing, Many, Group, Storage, Shelf, Container, Finances, Money
Source: The Curious Dreamer’s Dream Dictionary • Author: Nancy Wagaman
Interpretation 2 — Martha Clarke
Such images have a reverse meaning. So, if you dream of accumulating money you must be careful—economic losses are approaching.
If it is about collecting objects, the episode might predict scarcity.
Source: The Big Dictionary of Dreams • Author: Martha Clarke