If you are unfamilar with AppleScript, work through a tutorial about that first.
For example:
https://macosxautomation.com/applescript/firsttutorial/index.html
There are many resources online to support learning AppleScript, including video tutorials if that is your preference. It is designed to be a relatively straight forward automation language for non-programmers to pick up in terms if the more vet al approach it takes.
Hopefully you’ll be able to pick up the basics quckly and the previous example thread will make sense similarly quickly.