Does verifying your app prevent "app not verified" messages?

I have an app script app that allows me to send emails from Gmail based on info in a Google Sheet. Nothing crazy, as I’m still pretty novice.

When I run the app, it shows an **absolutely terrifying message that the app hasn’t been verified by Google. The only button on that message says “Back to safety” and to continue I need to find the hidden link that’s clearly marked “unsafe.”

I would like other people to be able to use this Google Sheet, but this message will be major friction.

I started going through the process of having the app verified, but now I’m wondering if that will even fix my issue.

If I have my app verified, will people be able to use my Google Sheet and the app script app inside it, without having to see this message?

Essentially I want to know how others can use this tool I built with as few pop up messages as possible.

Related but probably a different issue - if I get the app verified, will multiple people be able to use this sheet (and running the app) at the same time? Or is there a limit to how many people can use it concurrently?

Thanks in advance!