A film set is read as life seen as a staged production, with fronts that hide empty space behind them. Tradition links it to pretence, roles and the sense of acting rather than living.
Does the traditional reading fit your dream, or did it mean something else to you?
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.