Queueing for bread is read as scarcity and dependence — waiting for what you need from a system you cannot control. Dream books also see it as a worry about having enough, emotionally as much as materially.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.