I guessed right, didn't I? Then I don't see what the problem is: if you want, I'm here to help you and explain how to recover your account.
Unfortunately, however, you can't remember your password and all your attempts to access it have not been successful. However, when you entered your email address in the registration form, you realized that it is already associated with a Skype account.
After reading my guide on how to use Skype, you have decided to download and install the software on your computer and create an account to take advantage of all its features.