No. A Bridge is for extending the network of an existing Sonos system, and isn’t really needed anymore.
Assuming you do not currently have any Sonos products, you would need a Port to stream audio via the Sonos app, Apple airplay, etc, to your wired audio system. I must add though that if all your interested in Apple music for a wired system, this is very much overkill and much more than you need. There are other streaming devices that can stream Apple, or Apple airplay for a lot less money. The Port, and all Sonos products are more about replacing your wired whole home system than replacing it.
I should also add that I am assuming that you have amp(s) for your system already.
Thank you so much. i will check that out - i am such a novice!
Nothing wrong with being a novice! Think of all the exciting things to learn, and unlearn!