What notes I dint see them ..
If you mean counting triplets as in how to write them then you write them as you would any normal triplet. A quaver triplet would be a crotchet and a crotchet triplet would be a minim (although crotchet triplets aren't used much)
Not great with math sorry
A scene can mean two things. A scene can be the setting of a story, or (what I think you are referring to) it can be a segment of an Act of a play. A scene separation within a play is usually included in order to allow time for a change in setting during the performance. A chapter is a segment of a book. So, to summarize, a scene is a segment of a play and a chapter is a segment of a book.