But this is a bulb plant, how does seed form???

Plants that have bulbs can reproduce two ways, by offsets from the bulbs (which will be genetically like the parent) and by seeds which allows genetic variation in the species.

And when you plant a seed, it will actually turn into a teeny, tiny bulb in its first year, increasing in size until it has enough stored energy to allow it to flower (and set seed) in order to pass on it's genetic load which, because it may have been cross-pollinated, will increase diversity (and health and vigour) in the following generations of hyacinth.

Bulbs (and tubers, corms, etc.) are underground storage organs. That they can be used to facilitate propagation is incidental to their primary botanical purpose. A plant's - and virtually any plant - primary means of reproduction is by seed. And if it flowers, it has the ability to produce seed :-) Even those plants with no obvious "flowers" - conifers, grasses, etc. - still develop similar sexual organs that when fertilized, can produce seeds.

The only exceptions are spore producing organisms, like fungi, ferns and mosses.

Hello, thanks everyone for answering my questions, I really appreciate it :). But I have more questions, when can I plant the seeds from the seed plot, and when can I take the seed pod from the plant and plant it? Like when it’s brown or when it falls off by itself...? Or in a simple way, how do I prepare to plant the seed from the seed pod. Thx everyone :)

The pod needs to be brown and dry. It should start to split by itself. That will take a good few weeks. And it’ll be a few years before you get bulbs of flowering size.

I'd LOVE To Have a Go At Breeding Hyacinth's, So That's What I'm Going To Try This Year...