I might have the idea of why you don't have the Performance Center, sleimanayad-gmai.
Though you're already the Master Admin of the account, the Performance Center is only available in QuickBooks Online Advanced and QuickBooks Online Accountant. You can use this link for reference: Create charts to see your business performance.
If the Performance Center is essential to manage your business, you can upgrade to the said subscription.
We'll be right here if you have more questions about the Performance Center or other features available to your subscription.