Let's say you want to ask someone for help, you describe your issue, and then add:
Any help would be appreciated.
? Or "is appreciated"? Or "will be"? Any other way?
"is appreciated" probably sounds too premature (?), because the person might end up not helping you. "will be" probably sounds like an obligation to say "thank you", praise or award. The way it sounds to me, but I'm not a native speaker.