Yes, you can use your Peacock TV account on multiple devices, including different Samsung TVs.
Watch Peacock on Samsung Smart TV: Peacocktv.com tv/samsung

The process below is for Samsung smart TV 2017 or models above that. Use these points to activate it.

On the home screen of the TV, access the ‘Apps’ menu.
Now, tap the search icon, and in the search box, input ‘Peacock TV.’
Hit the ‘Download’ button. It will start downloading Peacock.
Choose ‘Add to home’ to install this streaming service’ app.
The Peacock TV will begin installing on your Samsung Smart TV.
Once it gets fully installed, subscribe to Peacock TV by tapping the ‘Sign up’ button.
After that, input the relevant details.
Pick a subscription plan.
Finish the payment process.