My wife has read most of his stuff. I know because I buy it for her. She says aside from Dracula, most of it is not great.
It's one of those firsts that established a genre.
I know Stoker didn't invent vampires, but they came into western English speaking culture through his Dracula.
There's also a sub-theme of the too secular modern men who don't believe in superstition (Jonathan Harker doesn't believe in vampires in the beginning) needing to get in better touch with Christianity to defeat Dracula- and features a rejection of secular psychiatry to defeat what turns out to not be "mental illness" way before The Exorcist did it.
Sadly I had really bought into the vampire chic trend when Coppola's Dracula came out in the early 90s. I had my dentist create some fangs for me to wear. More than one woman formally requested me to bite them on the neck. I dressed for goth clubs, more or less like an Anne Rice vampire (another thoroughly gay mythos).
It wasn't until Stephenie Meyer claimed vampires for the Latter-Day Saints movement that those Twilight sparkling dudes could be considered thoroughly hetero.