This is likely to have every one of your logins, not just a single login that may or may not be used on other sites, but the specific username and password and which site it’s associated with. On addition to access to those accounts, this links all of your accounts to a single identity which companies spend billions to do with advertising IDs, cookies, embedded scripts, and lots of other, usually shady, practices. This is a gold mine, though usually only for one or a few users, so generally not a major target unless you’re being targeted personally for some reason. So, even if they don’t get the passwords, they’ve now linked every account you have on every site to your identity.

afaik everything is encrypted. not like a big blob, but the properties of items are encrypted separately, if the encrypted export format has anything to do with the database structure