How can I turn off Touch ID on WhatsApp

Greetings elvina128, 

You can find Touch ID settings for your iPhone in Settings > Touch ID & Passcode. If you’re not seeing the settings there that you’re looking for, they may be app specific. Another place to look is Settings > WhatsApp. 

If at that point you’re still unable to adjust what you’d like we’re going to recommend touching base with the WhatsApp developers or perhaps their support page for assistance with settings within the app itself. WhatsApp Help Center

Here is also an article on how to find app support and/or developer contact information for an app that is loaded from the App Store, should you ever need it - How to contact an app developer

Thanks.