Can’t update any app from app store or download uninstalled apps from App Store

See the following Apple articles:

If you can’t download or update apps on your iPhone or iPad

If you can’t download or update apps on your iPhone or iPad – Apple Support (UK)

Require a password for App Store and iTunes purchases

Require a password for App Store and iTunes purchases - Apple Support

See -> Change, add or remove Apple ID payment methods – Apple Support (UK)

I want to download an app from the app store . Why am I having so many problems?

You owe money for a purchase that didn't go through properly against your registered payment method.

Contact iTunes support. Until you settle your debt, you will not be able to download or update anything.

I need a good app with local court forms

to use on my computer not phone