Greetings natty208,
It sounds as though you purchased a used iPhone and it's showing Activation Lock. If so, you'll want to reach out to the original owner/seller, and have them complete the steps listed below. You can also find these steps outlined in the following article. These steps are specific to removing Activation Lock from a web browser, which would then give you the ability to set up the device.
Remove Activation Lock on the web if a device is offline
- "Go to www.iCloud.com/find.
- Sign in with your Apple ID and password.
- At the top, click All Devices.
- Select the device that you want to remove from iCloud.
- Click Remove from Account."
How to remove Activation Lock
If you're having a different issue, please let us know in more detail about the issue you're facing. The more information we have, the more accurate our troubleshooting will be to reach a resolution.
Have a great day!