“France deployed the COVID certificate (Passe Sanitaire in French) since June 9 to support a secure recovery and continuation of business and activities. The Pass is required to access specific places, but not to study in a higher education institution.”
For more information : https://www.campusfrance.org/en/france-deploys-the-covid-certificate
If you wish to convert your vaccination certificate obtained abroad, the Ministry of Europe and Foreign Affairs has developed a tool especially for you: https://www.demarches-simplifiees.fr/commencer/passe-sanitaire-etrangers?locale=en
Do not hesitate to contact your Euraxess Service Centre for more information!