How do I get rid of the Pinterest App on the top of the screen next to the internet search bar?

Hi, Trish!

It sounds like you want to remove an extension from Pinterest.com (the Pinterest browser button: Save Pins with the Pinterest browser button | Pinterest help) from your browser's toolbar. I'm happy to help!

If you're using the Pinterest browser button with Safari, you can use the steps in Install and manage Safari extensions on your Mac - Apple Support to remove it.

If you're using a different browser, such as Google Chrome or Mozilla Firefox, you'll want to check out the following resources offered by Google and Mozilla, respectively:

Install and manage extensions - Chrome Web Store Help

Disable or remove Add-ons | Firefox Help

Have a wonderful day!

If you suspect you have installed adware/malware.

Try running this trusted utility https://www.malwarebytes.com/mac/