I cant update my iPad with 14.2 software version

Are you sure you have an iPad Pro? What is the model number?

Well you may need to change the way you are trying to update.

Try - If your iPhone, iPad or iPod touch won’t update - Apple Support

The user tip below may help.

Updating iOS: common issues and solutions - Apple Community

Which iPad do you have?

What happens when you try and update to iOS 14?

We will require more information, as just saying - I can't update - isn't really helpful for anybody