❶Your administrator shares your vCard by email
If you are an administrator, here is the procedure to share vCards: https://support.signitic.com/fr/articles/8341532-deployer-le-module-vcard
You should then receive an email like this:

You can either Download your QR Code (which allows you to share your contact later) or add it directly to AppleWallet by clicking on "Add to Apple Wallet".
❷Add to your AppleWallet

You just have to click on "Add" at the top right and your vCard will be present in the Apple Wallet.
❸I share my vCard!

You can now share your vCard wherever you are