It’s a scam. Every piece of information you gave has gone to the scammer. Could anything you answered be a password hint or secret question for any account you have? This information will be added to your name, eBay username information, probably your browsing history, etc. There may be a keylogger or malware on your device.
I’d suggest not entering any password on that device at present. I’d also suggest getting it checked by a tech professional. On a completely different and secure device, you may want to take steps to change all of your passwords and any password hints / account questions that might be affected.
