First, what a HubSpot consultant actually does.
A HubSpot consultant helps you get more out of HubSpot than you would on your own. That is the whole job. How it shows up depends on where you are stuck.
Some people need a portal audited because it has drifted and nobody is sure why. Some need pipelines and properties designed so the data stays clean. Some need workflows and integrations built and documented. Some need reporting the team will actually believe. Some just need a senior consultant to train the team and then get out of the way.
You rarely need all of it at once. A good consultant works out which part you are missing and does that, rather than selling you the full set.