How can I disable the need to have touch entry to my IPad with a fingerprint? that is how can I disable the touch with fingerprint to open some apps

You can selectively disable TouchID functions here:

Settings > TouchID & Passcode > [Use Touch ID For]

• iPad Unlock - set to OFF
• iTunes & App Store - set to OFF
• ApplePay - set to OFF
• Password AutoFill - set to OFF

You can also globally disable TouchID by deleting your Fingerprint(s):

Settings > TouchID & Passcode > [Fingerprints] - tap on the entry, then select Delete Fingerprint

Go to Settings>Touch ID and Passcode. Enter your passcode. In the next screen you can turn off whatever you don’t want to use with Touch ID.