Michael Schoch, Answers questions on Noodle
Here's a long list of videos and learning materials that give you step-by-step instructions on what the distributive property is and how to apply it in a math problem. Some of the videos are quick tutorials and some are part of full, online courses.
If you have other questions, or if you still need help after watching these videos, feel free to ask a follow up and I can point you towards more resources! Best of luck!