Can Buddhism help me find my passion?
The "passion" you talk about sounds like a craving for something which you haven't defined. Your question seems to be asking, "I crave something (I crave something to feel passionate about), but I don't know how to find the object of my craving. Can Buddhism tell me how to find what I crave?"

I think that basic Buddhism teaches one to recognize that "craving" as the source of dissatisfaction.

If your craving were for the sense-pleasure or the feeling-pleasure of an addictive drug (cocaine for example), I think that Buddhism would recommend that you seek less of it rather than seeking more.

The "happiness" you mention at the end sounds to me like it might be Sukha. I think there are several sources of sukha (i.e. several conditions, several types of activity which condition sukha), for example such as listed in the Pali literature section of that Wikipedia article.

Someone once lent me a book, titled The Buddha's Teachings to Laypeople: Practical Advice for Prosperity and Lasting Happiness, which I recommend. It organizes, summarizes, and references suttas which contain practical advice for laypeople. There are a lot of them! It has various chapters: about earning, saving, and spending money; having good relationships with people; making good decisions; and so on.