Hi @RosettaR4798: Based on the screenshot I could see that the sites are from PEGA instances created from academy modules or from community trial editions and the accounts are the test accounts for missions. This is common for everyone. Above mentioned sites and passwords are not specific to PEGA account login credentials.
BTW, if required to change the password of PEGA account, it can be done from the profile / using forget password option. Please see FAQ details here and here which has details on how to reset PEGA account password.
Thanks.