1) Omnes dei praeter Discordiam, pessimam dearum, in nuptiis Pelei et Thetidis, Achillis parentum, cenaverant, cum subito dea irata inter deas maximas malum aureum cum titulo “pulcherrimae deae” iecit.
All gods except Discordia, worst goddess, on wedding of Peleus and Thetis, Achillis parents, were dining, when suddenly angry goddess among highest goddesses throwed golden apple with title “pretiest goddesses”.
2) Is indicative present active of verb “facio” facimus or faciemus?
In the context of the myth, the dative works much better. The entire conflict revolves around “to whom” the apple should be given. The Genitive never conveys a sense of personal interest or advantage as the dative does.
Thank you. So I see now that “whose apple is it”(genitive) is not relevant translation considering the whole text, though it looks similar to “to whom the apple belongs”(dative).