Goose tastes fine.
But it does have a slightly stronger flavour that today's domesticated turkey.
It compares to Duck, its not quite the same, some would argue it actually has a slightly beefy taste.
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Winter Goose is quite fatty, while this can make it rich and flavourful, it can also be a grease bomb. It requires proper trimming and preparation, and if roasted, you will want will have to skim the jus/gravy quite a bit..
Summer Goose is actually fairly lean, and can and probably should be treated a bit like a lean steak. Grilled to medium rare. (You would just use the breast meat) .
Canada Goose, to my knowledge is not raised domestically for meat, but hunters can and do eat a fair bit each year.
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Cooked Goose (not my photo)
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Credit: Brock Pan-Yellow - user Quora