Is there a year subscription for family sharing?

LJ,

You can set up Family Sharing with no subscription. That will allow you to share purchases among the Members.

Once you have it, you can optionally add a family subscription to Apple Music for $14.99 USD/month.

Family Sharing doesn't cost anything. Certain services that you can share (iCloud Storage, Apple Music) do cost money. What is it you're asking about?

There is no annual plan for iCloud Storage.

On Apple Music. How much would it cost for a year subscription on single account and a family account. I would like to pay for the year instead of month to month.