I would say a 7.5/10 for me. While this is worse than the first instalment, it still has many things going for it.
The action, though infrequent (too much talk) is amazing ad the CGI has improved from the first film. Kristen Wiig and Gal Gadot both give fantastic performances. The plot is slightly bizarre at times like Steve Trevor's resurrection and the dreamstone thingy majig. I adored the costumes, especially the animal print punk rocker that not-yet-Cheetah wore. A light tone was really helpful to make easygoing and fun.
All in all, DC still hasn't caught up with Marvel but WW84 marks a significant step closer to the victory point.