I had to google, too.
I noticed the same as Relle. It appears the soaps are either melt and pour with palm and palm kernel or handmade with tallow and coconut. I did notice a person on Etsy didnt list ingredients. I sure wouldnt buy it without knowing what oils were used. I say just use your regular recipe and add the bee pollen to it.
That being said - what benefit would the bee pollen provide in soap? Especially since it wouldn't be on the skin very long and it would be rinsed off. I think lye would destroy any benefits from it. You'd probably have to make the soap HP and add it at the end of the cook. If you did it this way, would there be the possibility of an allergic or anaphylactic reaction by someone using the soap?
Its just my opinion but Id say either eat it for the nutritional benefits or add it to a leave on product.