I am new to Quickbooks online, when I try to create an invoice it shows only 3 options as non-inventory, services and Bundle. How to find Inventory?

I'm glad you're choosing QuickBooks Online for your business, maruf-famecomput!

The Inventory feature in QuickBooks Online is only available in the Plus and Advanced plans. If you're on Simple Start or Essentials, you can upgrade to Plus. Check out the available plans to see which one is right for you.

To upgrade:

1. Sign in to QuickBooks Online as a primary or company admin.
2. Select Settings ⚙ and then Account and settings.
3. Select the Billing & Subscription tab. This is where you also see the plan that you have now.
4. Make sure your payment info is up-to-date.
5. In the QuickBooks Online section, select Upgrade your plan.
6. Review the available plans and then select Choose plan. This is where you see the additional features that you can have.
7. Follow the on-screen steps to upgrade your plan.

Here's an article for your additional reference: Upgrade or downgrade your QuickBooks Online subscription.

Speaking of inventory, I'm adding this reference to guide you through setting it up, and how you can use inventory items in your transactions: Set up and track your inventory in QuickBooks Online.

Comment below if you need anything else. We're just right here to ensure you'll get all the help you need. Take care!