I know this is an old question, but better would be to convert the lookup to bring in the actual comment values than leaving them as IDs and having to go retrieve them. Seems like a poor design and wouldn't be human-readable by someone looking at the list directly, anyway.
But say you definitely needed to leave them as IDs. You can fill a workflow variable ...
You do not need to change the IIS binding on any of the WFM servers. Just make sure that the URL you want for the Workflow Manager is included in the SSL certificate or in the SAN of the certificate.
Next configure the Load balancer for this URL to balance the load between the 3 WFM servers
If "Total score" column is of type "Number" in SharePoint list/library, use condition like below:
Enter 7 directly in the textbox at right side.
Update from comments:
Try converting both sides of conditions to same format.
For example: I am converting both sides to float type like:
float(triggerOutputs()?['body/CalcMin']) is greater ...