Requesting and storing extra user information in user profiles/memberships

How customizable is the profile side of Squarespace? I'd like to integrate things like achievements on my online learning page, so little trophies attributed to users if they finish a module. On top of this, if I could get users to upload items for assessment to my attached Google workspace drive but have it retain the information for which user submitted it. Honestly, I just have no idea how this side of the website works. The profiles section so far just looks to be a list of email addresses which only exists in case I want to do an email campaign.

Happy to outsource this side of things to another provider if that's the easier solution and still affordable! 

40 minutes ago, Curtnos said:

How customizable is the profile side of Squarespace?

It isn't customizable at all. 

Even as a developer, you cannot curate content that is specific to a Member profile. The Squarespace stance on this is that only Squarespace-generated content, such as purchases and member areas should be stored within a profile. In their opinion, other information such as achievements should be stored in a third-party system. For example, you could embed one of the third party learning management systems and use this to store to track student progress.