Let's ensure the Number column is enabled in your Chart of accounts, Xujon.

Follow the steps in the screenshot below to check your page settings.

If the column still doesn't appear, verify that account numbers are turned on in Accounts and settings. Refer to the attached image for visual reference.

On top of that, make sure you have the necessary user permissions to access the Chart of Accounts. You can visit this article for more info: User roles and access rights.

As always, you can visit the Community forum if you have further questions about managing your Chart of Accounts.