Please help me a version Adobe Media_Encoder_2020_V14.9 and After_Effects_2020_V17.7

If the solution offered by Rick Gerard doesn't work, you can try getting the 2020 version from Adobe Customer Service (Make sure to sign in to your Adobe account first and allow popups and cookies on your browser. You may not be able to see the chat window if using a VPN.):
https://helpx.adobe.com/contact.html?rghtup=autoOpen will automatically open the chat window.
Type "Agent" in the chat box to bypass the chatbot and be connected to a person.

You may also be able to contact Adobe by phone:
https://helpx.adobe.com/contact/phone.html

or Twitter:
https://twitter.com/AdobeCare

Try using the Creative Cloud app to update or reinstall after effects. The media encoder will then match.