Yellowish spots on 2016 macbook pro with touch bar
Seems very common issue. Looks like the display is damaged from closing the laptop when it is too warm. I hope they do and I think Apple should extend the warranty for this issue.
Links to others with this problem below:
https://discussions.apple.com/thread/8622078
https://gregsamborski.com/macbook-pro-led-screen-discoloration-spots-15-2017-touch-bar/
MacBook Pro 15", macOS 10.14