Hi @Benoit-9317
Thanks for reaching out to Microsoft Q&A.
It looks like you either have no tenants created or you do not have permissions to create one.
Please, try to access the Entra ID porta (https://entra.microsoft.com), on your left go to Overview and then Manage Tenants. Click on +Create and then you should be able to create the tenant.
Let me know if that works for you.
Thanks,
Fabio