If you see a horoscope in your dream or vision it tells you about the cycle of life. Insight into yourself and the connections with the energy and the influence of the stars and planets on us as humans. The changes come with adaptations and changes in the universe go with the cosmos and its set time and zones.
Horoscope dreams are about becoming aware, gaining insight into yourself, your soul mission and everyone or everything that is connected to it. Past lives, previous situations and old and new unknown paths or possibilities, dreams about a horoscope are close to yourself and how you stand in life and how you act in life. It is a connection with all elements and dimensions and of course all zodiac signs.
It reflects "Your gift, your inner strength, your heart, your source, the power of visualizing, manifesting and so on". It is a reference to becoming aware of and activating your pure soul energy and what you are allowed to do and/or want to do in this life.
Another spiritual explanation is the connection to other extraterrestrial dimensions and of course the higher 5th, 4th, 6th dimensions here on Earth. In addition, it can refer to waking up and/or be a signal to the connection with spirituality and/or nature, religion, witch, wicca and so on.
In addition, it also refers to leis and crystal fields here on the planet - the connection to this and/or the signal that you can and/or may work with this. You can of course also think of the connection with the red planet and/or the vibrational energy of other planets and so on.