I haven’t used Hubspot in Make since the last update to the Hubspot app, Not sure if Create a Custom Object Record will allow you to do that.
However, You can utilize Make an API call to create/update products in Hubspot. Something like this should work,
You can find the configuration for API document here.
To update existing product what you can do is, get the product ID and then in Make an API call,
You can ignore the association from payload if you don’t need that.
Thank you and this was helpful