Software apdate.

Which "software" and using which hardware?

For apps on a mobile device --> App Store app > Updates, or select your icon in the upper right corner > click update all or select individual apps.

For iOS:

Update your iPhone, iPad, or iPod touch - Apple Support

https://youtu.be/csJAEyvvruY

Update software on iPhone, iPad, or iPod touch in iTunes on PC - Apple Support

Assuming a compatible device, see: Update your iPhone, iPad, or iPod touch - Apple Support

If the above Apple article doesn’t help, please post back with relevant information.