how Can I git Company Id

Welcome to the Community space, Ashraf.

You can find your Company ID number in three ways, with the quickest being the keyboard shortcut. While QuickBooks Online is open, press Ctrl + Alt + ? (Windows) or Control + Option + ? (Mac) simultaneously. 

You can also find your Company ID quickly from the Additional info or Subscriptions and billing pages. Here's how: 

1. Click the Gear icon in the upper-right corner.

2. Select Additional info (your Company ID will display in the Additional information section) or select Subscriptions and billing (your Company ID will be displayed at the top of this section). 

Feel free to let us know if you have any additional questions.