Hello,
Thank you for reaching out to the Microsoft Community and I'll be glad to assist you today.
Go to the start menu > Settings > Apps > Optional Features > Click Add a Feature option.
Then, find the "Wireless Display" Feature in the lists and make a checkmark on it and click Install.
Once the "Wireless Display" Optional Feature has been installed, you can launch the Connect app by searching for 'Connect' in the search bar on the taskbar.
I hope this information helps. If you have any questions, please let me know and I will be happy to help you further.
Best regards,
Gunasekar N