UpWork has a time period before funds are released to your account, it is not immediately done. The funds should be in your PayPal account within the next couple of days.
Thank you for reaching out to us! Usually, payment transfers to PayPal account immediately. There are occasions when it may take up to 24 hours. If it has been more than 24 hours, please contact PayPal. Please read this help article for more information on PayPal fees and timing!