If you are an administrator, here is the process 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 Google Wallet by clicking on "Add to Google Wallet".
You just need to click on "Add" at the top right and your vCard will be available in Google Wallet.