I just tried fingering myself in the shower and couldnt find my vagina hole and was wondering why
You need to part you labia (the lips that cover your vagina). if you are in the shower, get your fingers nice and soapy and the slide your finger up and down in the "slit" applying gentle but firm pressure and you should find you finger will slip in between the labia. Once in between the lips, slide your finger down with tip bent inwards and you should find your vagina.