how do i lock my stuff (xbox)

in first person building view, walk up to the object and you should see in the bottom left that it shows "Lock Item", i think its set to left trigger?

You can lock a camp resource item up to the level of your lockpick skill.

It wont work in 3rd person camp building though as left trigger will just raise the camera up instead.

go into build mode. highlight an item. bottom left should say LT LOCK. then select a lock level from 0 to 3

I leave everything unlocked and easy to access. Feel free to help yourself. I have more water than I could ever use and I am to lazy to keep selling it. I also keep my punch bowl stocked with vintage nukashine for anyone who wants to have a good time.