I cannot see the saturation bar and its on in modmenu

Assuming this is not a bug unless more info is given.

Are you playing on a multiplayer server? If so, is AppleSkin installed on the server?

No its not installed on the server but its supposed to work

its supposed to work

It only fully works if it's installed on the server. From the description on CurseForge:

This is a mostly client-side mod, but it needs to be on the server in order to display accurate saturation/exhaustion values on the client.

No it compeletly doesnt work I remember it worked..

You're going to have to give me more info. I can't fix something that I can't reproduce.

Does it work for you in single player? Do you have any other mods installed? Does it work if you only have AppleSkin installed? How are you determining that it "doesn't work"?

Yeah I can't give you more infromation on what happend there for some time it somehow works now the only thing I can think of is it might be a multiconnect bug but it works now so