There are no spells that will turn you into a vampire or anything else.
The whole idea of vampires is based on a Medieval misunderstanding of the natural processes of death. Later it was poplarized in fantasy novels, role-playing games and Hollywood films. But none of it is real.
Magic does have its limits and changing your DNA or turning you into anything other than the human you already are is way beyond those limits.
Now, if you'd like to learn what magic really can and cannot do I'd suggest the book "Modern Magick" by Donald Michael Kraig.