I am not able to update the software

Hi Abhikhadka, thank you for posting in Apple Support Communities.

Please note the following link explains how to update an iPad:

https://support.apple.com/en-au/HT201222

However, I noticed in your post it is showing an iPad with IOS 10. You can check your model iPad in the following link:

https://support.apple.com/en-au/HT201471

As such it may be that the iPad cannot update any further and you can check which security update your iPad can receive in the following link:

https://support.apple.com/en-au/HT201222

You can also contact Apple Support if the above links do not resolve your iPadOS update issue as follows:

• Online:--> Genius Bar Reservation and Apple Support Options - Apple;
• Contacting a local Apple Store or AASP among the list provided above but also again as follows Apple – Location Selector; or
• Using the "Apple Support" app, available and downloadable from App Store.

Abhikhadka Said:

"I am not able to update software in iPad"

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How to Update an iPad:

By using a compatible device, and reliable connection.

Verify Compatibility:

1. Go to: Settings
2. Tap: General
3. Tap: About
4. View: the model shown

Then, see if the device is shown here:

Go here iPad Models Compatible with iPadOS 15.2 - Apple Support

If compatible...

Use of a Computer to Update:

My User Tip: Making Use of a Computer for Updating an iOS Device - User Tip