How do I report marginal means of a two-way unrelated ANOVA correctly? APA-style

#1
Hello,
after doing a two-way unrelated ANOVA (General Linear Model > Univariate) on SPSS, I am confused how to report the output correctly.
My professor told me to report only the marginal means of the cell means (I have 4 cells) but how exactly do I do that? Do I subtract one from the other???:confused:
Do I report all means or only the sig. ones?

And concerning the table "Tests of Between-Subjects Effects", what shall I write in the text and what in a table?

Thank you very much for your help. I hope someone knows the answer!!!