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".
You just have to click on "Add" at the top right and your vCard will be present in the Apple Wallet.
You can now share your vCard wherever you are