How to check to see if anyone is using my email address on their device

Hello Cantouchthis21,

If you wanted to see which devices are using your account, you follow: Check your Apple ID device list to find where you're signed in - Apple Support

Check your Apple ID device list to find where you're signed in

Learn which devices appear in your Apple ID device list, how to find your device's details (including if it's a trusted device), and how to remove a device.

Find where you're signed in

Follow these steps to find the devices that you're currently signed in to with your Apple ID. 

Use your iPhone, iPad, iPod touch, or Apple Watch to find where you're signed in

1. Tap Settings > [your name], then scroll down. 

2. Tap any device name to view that device's information, such as the device model, serial number, OS version, and whether it's a trusted device that can be used to receive Apple ID verification codes. The information might vary depending on the device type. You might need to answer your security questions to view device details. 

To regain access to your account, we'd recommend taking these related steps:

• If you think your Apple ID has been compromised - Apple Support
• Use the built-in security and privacy protections of iPhone - Apple Support
• Keep your Apple ID secure on iPhone - Apple Support

If you believe the account is being accessed from someone else and the steps above don't solve the issue, then it would be best to contact Apple Support about this. Here's how you could do that: Contact Apple Support

They'd need to take it from here.

Take care.