How can I hide the help/chat icon inside the dashboard?

You may get disturbed by the help icon that exists in the dashboard, but you can easily hide it following the steps in this article:

To hide it, we will need to go to the users and permission page through the store settings, then enter the role or the admin group you want to hide the icon for (Except Top Administrator can't be edited), after opening the permissions of the role, search for billing account and disable it as shown in the following screenshot:

After clicking on the save button, for any user or admin in this group, the help icon will be hidden and it won't appear once again unless you enable that permission again.