Your dream is rich with symbolism and seems to reflect various aspects of your life and emotions. Let's break it down:

1. Empty Movie Theater: The theater may symbolize a space for reflection and creativity, perhaps indicating that you are currently feeling isolated or disconnected from your passions or sources of happiness. The Chromebook represents a means of escape and joy for you, suggesting that technology or creativity is essential for your well-being.
2. Hiding the Chromebook: Hiding your Chromebook from your mother indicates a desire to protect your happiness and autonomy. This could reflect a struggle for independence or a fear of losing what brings you joy, especially if you feel it is being threatened.
3. Walking Down the Street: The familiar street at night symbolizes comfort, while the unfamiliar street filled with movie-like houses may represent anxiety or fears about the unknown. The Halloween decorations could point to themes of fear and disguise, suggesting you might be grappling with something unsettling in your life or emotions.
4. Babadook Appearance: The Babadook is often associated with fear and unresolved emotions. Its presence in your dream might indicate that you are confronting something frightening or repressed in your life. This could be linked to feelings of anxiety or past experiences that you need to address.
5. Reading Test and Stuttering: This part of the dream reflects feelings of vulnerability and self-doubt, particularly in situations where you are being evaluated. The stuttering suggests a fear of not being able to express yourself fully or feeling judged, especially in an area where you know you excel in waking life. This could symbolize the pressure you feel to perform or a fear of not meeting expectations.

Overall, your dream seems to reveal underlying feelings of fear, anxiety, and a struggle for independence. It may be helpful to explore these emotions further in your waking life, perhaps by finding ways to express your creativity freely and addressing any issues that make you feel vulnerable or judged. Consider talking to someone you trust about what you're experiencing, as sharing your thoughts can often provide relief and clarity.