If you are facing problem signing into your Skype account or you have forgotten your username or password then, in Order to regain you Skype account you have to follow these steps :
STEP 1 : Firstly, Go to the Skype Sign in Page and then Select More Sign in Options
STEP 2 : Select Forgot my Username
STEP 3 :Enter your phone number or any associated email account and afterwards you will get a security code, Enter the code and Select Next
STEP 4 : When you will see the account you are searching for, Select Sign in
There is an other case in which if you have Forgotten your password then you have to Go to the Account Recovery Form
Fill it with given requirements you have asked for the form may take up to 24 hours to verify your information.
