[sureLoss]

the main takeaways from Captain America: Brave New World for the overall MCU if you decide to skip the film (spoilered for spoilers)

Spoiler!

The giant celestial corpse from Eternals that emerged from the ocean is now Earth's source of Adamantium. Seems the US, Japan, France and India (maybe more) have reached a treaty to share the Adamantium.

Adamantium is described as better than Vibranium, so maybe the other countries will be more inclined to leave Wakanda alone.

Sam has decided to reform the Avengers.

Also the end credits scene has the Leader warning and teasing Sam about the upcoming Secret Wars.