More than you will probably ever need or use.
The Production Solution products are designed to give you working choices rather than just a few examples.
There are 2500+ Feature and Label Styles in Instant On Basic product.
There are thousands and thousands of unique styles in The Jump Kit.
They are organized, documented and adhere to naming conventions that are easy to learn by doing.
"How many?" is not really the significant question.
"Do the Styles and Sets work?" is MORE important..
What you get will be even easier to customize and maintain.