Answer:
Skype is a utility that allows people to connect with each other, where you can send text messages or make voice calls with your friends from anywhere. To view old messages on Skype, follow the steps below:
Method 1: Click on the username you want to review the history for.
Under the section “Show messages from” there are 3 options for you to view: Yesterday, 7 days, 30 days.
Method 2: Click on “Conversations” and then select “view old messages”.
If you want to view the chat history of all the usernames you've chatted with, do the following: click on ‘‘view’’, select ‘‘Quick messages’’. Then click on the username you want to view.
Wishing you all success!