Why can’t I update my software
I’m finding it difficult to update my software
Question marked as
What kind of software on which hardware?
For mobile device system software, read this document: Update your iPhone or iPad - Apple Support
For apps on a mobile device open the App Store app, then Updates, then select the person icon in the upper right corner. Click update All, or scroll down past the first screen to select individual apps.
If something else, please post with more details.