How do I know how many Apple IDs are in my iPhone

• Your phone can only have 1 Apple ID signed in to use iCloud. This is at Settings > [name on top]
• You may have an additional Apple ID used for Media & Purchases. This is at Settings > [name on top] > Media & Purchases.
• You can view all the devices signed into your account by going to Settings > [name on top], and scroll to the bottom to see the devices signed in using that Apple ID.
• It is possible that a moderator changed your name used on this site, but that does not affect your Apple ID.

There should only be one - the one you are currently signed into your device with. You may have created other apple ids in the past, however only one should be on your device.