Todelete your Upwork account
, follow the steps below:

Log in to your Upwork account.
Click on your profile picture located on the top right corner of the screen.
Select "Settings" from the dropdown menu.
Click on the "Contact Info" tab.
Scroll down and click on the "Close My Account" button located at the bottom of the page.
Choose a reason for closing your account from the dropdown menu.
Confirm your decision to close your account by clicking on the "Close Account" button.
Please note that once your account is closed, all of your data, proposals, and messages will be permanently deleted, and you won't be able to reactivate your account. Also, you need to have no active proposals, contracts, or unpaid balances before closing your account.