Minecraft Bedrock Edition: Failed to sync world data.

You can use the Minecraft Realms standard or try the steps below first when transferring worlds.

In Minecraft (Bedrock Version), select the Sync Old Worlds button at the bottom of the worlds list in the Play menu. This finds any worlds on the device from the Minecraft: PS4 Edition and displays them below the button.

Select any of the worlds that are displayed to convert it to the Bedrock edition.

After conversion, the world will show up above the Sync Old Worlds button, along with the rest of your Bedrock worlds.

I uninstalled Minecraft and I can now see the world on my world list but whenever I try to edit or load the world it says “Failed to sync world data the world is not fully synced or has been corrupted try playing the world on a console where it’s in a good state and try migrating it again”

You can sync worlds from Minecraft: Xbox One Edition to Minecraft for Xbox One (bedrock edition) in game,
but you cannot sync the content across, as far as I know.

Are you talking about a Minecraft world? Also, what version [Xbox one(the old one) or bedrock (the latest one with cross platform)]?. Usually if you're connected to Xbox live, all worlds sync up to the cloud, if you're playing on Minecraft Bedrock edition,
when you click play, there should be an option at the bottom to sync old worlds.

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In Minecraft (Bedrock version), select the Sync Ancient Worlds button at the bottom of the world list in the game menu. ...

Select any of the displayed worlds to convert it to the Bedrock edition.