iPad 7th generation with IOS 14.5.1

Your iPhone has a “battery health” function - this being exclusive to iOS for iPhone.

iOS/iPadOS for iPad has never had the Battery Health feature - most likely because iPad batteries are both considerably larger and have a much longer service life. 

An iPad battery is rated to maintain at least 80% of its initial capacity after 1000 full charge/discharge cycles - whereas an iPhone is rated to have 80% of initial capacity after 500 full cycles.

There are software packages available that can access battery cycle count - but they require use if either a Mac or PC computer. Popular choices for Mac are Coconut Battery and iMazing - whereas iMazing is available for PC.

https://www.coconut-flavour.com/coconutbattery/

https://imazing.com/

See >>> Charge and monitor the iPad battery - Apple Support

Beyond the native means by which you can monitor the current state of charge, it is unclear what you may be attempting to achieve.

If you need more help, this article may help you to outline the problem, or ask a question with sufficient detail, such that explicit information or guidance can be provided:

Writing an effective Apple Support Commun… - Apple Community