Learn French: Vous êtes toujours libres ?

In French, adjectives must match the pronoun they describe. Because vous (you) here refers to more than one person, the adjective libre (free) gets an extra s to make it plural: libres.

Do I pronounce the "s" at the end of libres?

No, the plural s at the end of French adjectives is almost always silent. You pronounce libres exactly the same way as the singular form libre.

Couldn't vous also be used for just one person if I'm being formal?

Yes! Vous can mean plural "you" or formal singular "you". If you were asking just one person formally, it would sound the exact same, but you would write it without the plural "s": Vous êtes toujours libre ?

Does toujours have an "s" because it's plural?

No, toujours (always) is an adverb, which is a type of word whose spelling never changes. It just naturally ends in an s, so it looks plural even though it isn't.

How is this a question if it doesn't use est-ce que or flip the verb around?