I tried it for 2 days but it has only been 77days. Is it detectable in my hair for testing?

Yes.

Well I bleach my hair then used hydrogen peroxide and bleach it again and then in the morn. I dyed it. Is it enough to where my hair is dead? Or do I need to keep bleaching it. To passed the hair screening

I'm sorry, this site does not assist in passing drug tests. For the record, hair is already dead once it emerges from your body.