How long does a 850 hold

Hello , let’s ask a question , I drive a Volvo 850 2.0 from 1995 , circuit , so far 306000 km , first clutch . Has been regularly maintained , I wonder currently , how long will it last . Since 5000 km it squeaks when the clutch is kicked . I know a statement like at least 500000 km , so nobody can say , always depends on the maintenance . Interestingly how much KM have your cars already down . And what is that noise from the clutch . Mfg