Bonjour je viens de prendre un abonnement pour indesign et je n'arrive pas à rentrer dedans il me dise "Votre version de InDesign (Beta) a expiré." alors que je viens de payer 62.20 €

check your account, https://account.adobe.com and verify everything is what you expect.

then sign out of the cc desktop app

then exit the cc desktop app and reopen it.  sign in with the same adobe id/pass used to confirm your subscription.

You should access the public release. Beta’s are test builds and they can have issues. Use creative cloud desktop app to install the latest InDesign version