Q. How do I make a list in an appendix in 6th edition APA style? With numbers or bullet points?

You can use either numbers or bullets - whichever works best:  "As the Publication Manual of the American Psychological Association notes (p. 63), creating a list sometimes 'helps the reader understand the organization of key points.' And although numbered lists are useful, in some cases the numbers may imply a chronology or ranking of importance that you don’t intend. Thus, I’m happy to share that bulleted lists are now an official part of APA Style (pp. 64–65)!"  (APA Style Blog, 2010).