Allow users to create and store data and retrieve it on login

you can store user data in user meta fields which you can get and display to the user.
use update_user_meta(); function to store user data and use get_user_meta(); to retrieve stored user data.

// you need to get user id and replace meta_key with yours
$user_data="some user lists data";
update_user_meta($user_id, 'meta_key', $user_data);

// now get user data
$stored_user_data = get_user_meta($user_id, 'meta_key', true);