I was almost going to suggest you the screens from Fluke 83 or 85, then I checked the service manual and there is little difference in those with 87 one.
You need Fluke part number: 832188
This will probably fit on a 83 or 85 too but not other way around.
All the LCD’s are marked with U5 in the manual so don’t buy one only marked with U5, to make it sure you should avoid part number 782763 since that one is for 83 and 87.
I would make a ebay search query with “Fluke 832188” and wait till you get mail when it’s listed.
Only difference is DUTY text and two arrows at the graphic bar and the bar it self so far I can see: