My AirTag is set up on my iPhone but is not showing up on the Find My on my MacBook.

Hey there,

Thanks so much for visiting the Apple Support Communities. If we understand, you've set up your AirTag on your iPhone, but cannot see it on the Find My map using your Mac. We are happy to help!

According to the information found in the Apple Support article Find your keys, wallet, and more with AirTag - Apple Support, if your AirTag does not appear on the Find My app after setting it up, remove and reinsert the AirTag battery.

Best.

Thanks for the update!

It's great to hear you were able to get the AirTag working as expected. We were happy to have assisted.

Have a wonderful rest of your day!