How To Install Peacock on Firestick, Install Peacock from the Amazon Appstore
On the Fire TV home screen, navigate to the Find tab and select Search
Enter peacock in the search field and select Peacock TV or Peacock App in the search suggestions.
Select the Peacock app icon in the “Apps & Games” section.
Afterward, select Get (or Download) to install the app on your Fire TV Stick.
Select Open to launch the app and sign in with your account information or create a new account on the streaming platform.