Ive been looking throughtout this forum and all i basically see is piano, mostly piano ofc. I only found one tuba sheet so far. Cant we have more?

If people request them and others are willing to transcribe them, then yes. If not, no.
It's not that we have a personal vendetta about tubas or anything, its just that it's not a popular instrument here.

Since it's not popular to transcribe tuba, why not learn to play be ear? I actually am doing a site where will have a section for beginners to learn to play be ear using some of my methods. ^_^ I can teach you but I don't know too much about the tuba or wind instruments in general other than common knowledge and my random musical expirience. Can tuba's play chords or just single notes? And if your referring to reading music couldn't you just take piano melody and transpose it clef wise, or I could do that for you too :D

Id like that but im not sure about what your talking about, i mean instrument wise