Unless you have an antivirus capable of blocking/removing the malware you downloaded (it will tell you if it did block something), your PC could be compromised by any number of different malware types. The PC you are sitting at is most likely compromised. What happens if you downloaded (and then executed or gave permission to execute to) something? Enabling some form of 2-factor-authentication is recommended to prevent this from happening in the future. Attempt to change your password and contact customer support for more help. Well, you should assume that the account the credentials belong to is now compromised. Assume you are fine if you did nothing except click the link. It is, and I cannot overstate that, incredibly unlikely that this happened. The only way to do something with you only clicking a link is using a yet unknown browser exploit and let me just say if these people had that kind of exploit they wouldn't be running scams like this. Modern browsers are incredibly safe and unless you actively enter credentials or download something, they won't let anything happen to you. Contrary to the widespread misinformation on this topic, only clicking a link cannot do anything bad unless you then enter credentials or download something. Well, if you only clicked the link then absolutely nothing can happen.