We want you to be able to take your data seriously. If you need a copy of your account data in a portable form, contact us through Contact Support (or your usual support email) and include the email address on your account.
Site administrators may have separate export tools in WordPress admin for operational backups; those are not the same as a self-serve user export button.
If you need deletion under applicable privacy laws, mention that in your request so we can verify your identity and process it according to policy.