So I have two Xbox series x I tend to jump back and forth one is in my room the other in the living room, I was playing on my husband for days and the I went to switch back to mine all of the work that I've put into it wasn't their, I basically have to world that are the same just one is a lot further in progress. I don't know how to sync the I've tried everything
On the more recent progress console, make a copy of the world. This world should probably be able to sync. If it still won't, you need to delete the original world file. Then open up the copy of the world and close it, hopefully it syncs. NEVER delete it without ensuring the copied world works correctly first.
also, download Minecraft Preview for free. In the settings → world storage → import worlds from release version, you can find which worlds (and what dates on the file) are really being stored on cloud.