Scaffolding goes up while something is built or repaired, read as a period of growth that still needs support. Climbing it stands for working toward a goal that is not yet finished.
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.