How to use the clicked item on a repeater in a page to filter the database of a repeater in another page.

Therefore once a user clicks on a repeated item on a page, he is linked to another page with where another repeater which is being filtered based off of the selection made on the first page

I would suggest you to take a look at this video first, which will show you how to work with repeaters.

Also take a look to the Corvid’s-API-REFERENCE for REPEATER…

https://www.wix.com/corvid/reference/$w/repeater

Here you will find all the possible actions, what you can do with a REPEATER.

Here another video to learn using repeater…
https://www.youtube.com/watch?v=uiftGNZsLXA

I would take a look at all these