need to install microsoft word for my ios 10.3.3

It will not matter for you and what you seek.

As I CLEARLY stated Microsoft removed ALL versions of their older apps the the iOS App Store servers.

They are gone and gone for good!

As I said, absolutely nothing will work any longer to get older Microsoft iOS apps for older devices.

Can't make my explanation any simpler to understand.

Sorry, you are not getting these apps, any longer.

Purchase a new or Apple refurbished iPad that supports the current iOS version.

Best of Luck to You!

There are 3 ways to get older apps from the iOS App Store servers, if older versions of apps are still available and found on the App Store servers.

Unfortunately, Microsoft, just within the past couple months, have removed ALL older versions of their apps from Apple’s iOS App Store servers.

There is NO LONGER any way or possibility to get any older versions of Microsoft's Office app for iOS, including Skype.

This is not possible, any longer.

Sorry.

☹️

None of the ways MichelPM had documented this will help you get Microsoft Word on your iPad. As already mentioned, Microsoft no longer supports the app for iOS 10.3.3.

For other apps you may want to check, this is the link: Downloading Older iOS 9.3.5 Versions of A… - Apple Community