don't bother. after endgame, marvel is going on that "its all downhill from here" routine.
edit: just wanted to add. its also extremely gay. the whole chinese theater style of movie like "crouching tiger hidden dragon" just doesn't suit marvel movies. its boring, overly flashy, and a lame kind of elegant. they picked the wrong director for this movie. I wish they would've stuck with someone north american.
conclusion: you will be reaching for your phone first 5 to 6 minutes.
anything good: there is some lore regarding the mcu. is it worth the boring 3 hour watch? kind of. if you're into the mcu, as in where its headed, you should stick around until the end.