Ans also here :

https://steamcommunity.com/app/892970/discussions/1/3431201423166201979/

Pinned thread in the "bugs and Technical Issues" sub-forum

Maybe....

The following Is two replies from the same fine fellow from two similar recent posts:

electricdawn has Valheim 1 hour ago

Your local cloud save folder is here:
C:\Program Files (x86)\Steam\userdata\YOURSTEAMID\892970\remote

Enter the "worlds" folder and look for a file called something like "YOURWORLD.db.old".

WARNING: The following steps only work, if you have NOT logged in since your death:
0. Quit Steam. Make especially sure Steam is NOT running!
1. Create a copy of the entire "remote" folder and put it somewhere safe. It is highly recommended to backup this folder periodically (and to have multiple older copies) so you can fall back on them if for some reason Steam Cloud/Valheim go crazy and reset your world to day 1.
2. Enter the "worlds" folder and move the file "YOURWORLD.db" and "YOURWORLD.fwl" out of there and put them on your desktop for now.
3. Remove the ".old" from the files "YOURWORLD.db.old" and "YOURWORLD.fwl.old"
4. Get back into Valheim and give it a try.
5. If you got your boar back, then you can delete the files from step 2. They are no longer necessary to keep.
Last edited by electricdawn; 1 hour ago

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Ok, if you have cloud saves activated, potential world recovery should be something as follow (as per the Bugs and Technical Issues forum):
Download the backup files from cloud storage . You have to be signed into steam in your browser.
Look for Valheim, look to the right, and click the 'show files' button.
Look for a database (.db) and .fwl file that includes "backup" in the name and download them.

Should be formatted something like this (mines gonna show different dates/times):
"IronGate/Valheim/worlds/Myworld_backup_20220627-195041.fwl"
&
"IronGate/Valheim/worlds/Myworld_backup_20220627-195041.db".

In windows file explorer go to "C:\Users\"your name here"\AppData\LocalLow\IronGate\Valheim". You should find worlds folders; 'worlds' & 'worlds_local' make a copy of these folders and save them somewhere like your desktop or whatever just to be safe and have a backup in case things go awry.
Delete your worlds files in both world folders (not the copy you just made). Just delete the files for the world you're trying to restore, leave other ones you may have alone. Do this for both worlds folders.
Take those .db and .fwl files you downloaded and rename them to whatever your worlds name is but be sure they remain a .db file and a .fwl file and paste them into both of those 'worlds' folders you found here: "C:\Users\"your name here"\AppData\LocalLow\IronGate\Valheim"
Then hold onto your butt and start the game. You should have everything back.

I haven't had occasion to try this myself (yet). I hope this helps.