You need a real and microphone that are both on boom stands. Your microphone should have a wind filter and pop shield. The camera should be a real camera with external microphone jack, not a 'webcam'. You should probably have at least one light stand to eliminate shadows, and cover the walls in tapestries or other soft covers. The room is just as important as the equipment. You can't get good quality if you have poor lighting and feedback issues from the room.
I use an old iPhone 5s with a Zoom iQ5 microphone. It works for me.
@KCJones good one!
What Jeff says. Like he, I also have a (discontinued) iQ5, now superceded by the iQ7. There is a Zoom app for iOS that works to optimize and record audio for the Zoom microphones. That's a different company than the Zoom conferencing app.
Zoom video conferencing works great if you're set up right. Watch this guy's video and download his free book for using the Zoom app to make high quality audio. GarageBand cannot be used directly since AV supports 48kHz only and GB does not at all (Logic and nearly all other DAWs including the Zoom mic app do not have this restriction).
You can also record to another app (including GB) at the same time using your good microphones etc. and sync later. For that, you will also need a video app—you'll delete the Zoom audio and sync your audio, render and you're done. I provide music for online church services this way. If on a Mac, iMovie is free and does this easily.