Trigger a tap event on a single item within a displayed list

I am developing an app that depends on my ability to determine what specific item on a list was selected and then do some action unique to that item, like navigate to another webpage or display a certain set of values.

My list will also have more than 100 entries so I don’t have time to manually program each one.

How would this be possible?

Any help would be greatly appreciated.

Thanks!