Goosebumps rise with cold, fear or awe, so they are read as a sharp emotional response. Dream books link them to something that moved or unsettled you deeply.
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.