Hello, friend!
FusionCompute portal IP is VRM IP, which specifies the floating IP address of the VRM nodes if the VRM nodes are deployed in active/standby mode, or the management IP address of the VRM node if only one VRM mode is deployed.
1. You can check the FusionCompute IP from your LLD.
2. You can use the CNA to check the VRM IP.
a. Log in to the CNA server as user gandalf and view the /etc/vna-api/om/om-info file to find the VRM IP address.

Hope this helps!