How long since you last logged in?
If it is over 12 months I'm afraid all files and data has been deleted - https://help.dropbox.com/account-access/email-about-inactive-account.
To get around 2FA the only way is to use the recovery codes given when setting it up - even Dropbox support wont remove it for you. However, as I said, if its over 12 months since you logged on the account will be empty.
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