It varies - lots of factors impact recovery, mental as well as physical. Timber came back relative quickly for Arsenal, others have taken longer. My daughter ruptured hers playing for Ipswich Town in December 2023, had surgery in February 2024 and is now training with the team but non-contact only. It seems to be about nine months post surgery for most professionals who do not experience complications.
If sadly that has what Mangala has done, in essence it is the end of his Everton career - for now, at least.
….sorry about your daughter but as an aside, that seems a very common injury in women’s football.