This is a unique set of numbers that serve as the identifier for your account. Your Player ID is one important information that EA may ask to you in case you have trouble with your game.
If you need help in searching your account, instead of giving your personal details, EA will request you to send your Player ID to help you further. You can also use your Player ID in reporting bugs, missing game content and progress issue to EA.
Locate Your Player ID
First, tap the arrow pull-out tab on the right side of the game screen.
Tap the Settings gear tab then "Help & About". Select "About".
Your Player ID is located just under the game version.
Take note of your Player ID and keep it somewhere safe . You can take a screenshot of it then upload it in your cloud such as Google Drive or iCloud. That way you have a reference of it in case you need EA's help.