I have heard that the mods do not work on xbox, so im just wondering:if im wearing modded clothing and i migrate my acc back to the xbox, what happens to it. Also what happens to modded content thats in my inventory???

I believe that using Fallout mods on your XBox is illegal.
At least it is for Morrowind and Oblivion.

i'm assuming you mean DLC instead of usermade mods. to answer: i have no idea, but you might wanna clarify your usage of the word "Mods"

The DLCs are just mods made by bethesda - the results are the same. Modded items disappear, mods that added perks to your character crash horribly.

Almost certainly, it will just disappear from your game. Depending on which mods you have installed, there is a chance your saves will be unplayable after migration.

gothemasticator

Sorry, no fan-made mods on the xbox.