Hi @Mame Meier ,
as far as I know there is no way to find/see the password/PIN (not the Bitlocker Recovery Key).
It might be the easiest way to set a new password/PIN if the Bitlocker Recovery Key is available.
Right-click on the drive and click on Change Bitlocker PIN
.
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten