Hello Himanshi,
Teamcenter connector supports SSO out of the box, but not direct client-certificate login. To use certificates you’ll need to configure Teamcenter (or IIS/reverse proxy) to trust the client cert and map it to a user, or use the cert for a token exchange to get an access token which Mendix can use in API calls. Best first step is to test the cert with curl/Postman, then integrate the same flow in Mendix.
Regards
Reemali