I have two old iPads and the larest software update the have is 10.3.3 and it says that is the latest, I need to update to latest update which is 12 .2 According to my iPhone, is it possible to get this version on my iPads and if so, how? Thanks

Update the iOS software on your iPhone, iPad, or iPod touch - When you update you will only be given one update selection which will be the highest available iOS version supported by your device. If it says no update is available and you need a higher version you will have to buy newer equipment.

hhttps://support.apple.com/HT204204

When asking this kind of question it helps to include model information. For example iOS10.3.3 is the maximum for 4th gen iPad