How many order status are there?

Order Status

Processing

When the state of new orders is set to ‘Processing’, the Automatically Invoice All Items option becomes available in the configuration. Invoices are not created automatically for orders placed by using Gift Card, Store Credit, Reward Points,or other offline payment methods.

Suspected Fraud

Sometimes orders paid via PayPal or another payment gateway are marked as Suspected Fraud. This status means that the order does not have invoice issued and the confirmation email is also not sent.

Pending Payment

This status is used if the order is created and PayPal or similar payment method is used. It
means that the customer was directed to the payment gateway website, but no return
information has been received yet. This status changes when customer pays.

Payment Review

This status appears when PayPal payment review is turned on.

Pending

This status indicates that no invoice and shipments have been submitted.

On Hold

This status can only be assigned manually. You can put any order on hold.

Open

This status means that an order or credit memo is still open and may need further action.

Complete

This status means that the order is created, paid, and shipped to customer.

Closed

This status indicates that an order was assigned a credit memo and the customer has received a refund.

Canceled

This status is assigned manually in the Admin or, for some payment gateways, when the customer does not pay within the specified time.

PayPal Canceled Reversal

This status means that PayPal canceled the reversal.

Pending PayPal

This status means that the order was received by PayPal, but payment has not yet been processed.

PayPal Reversed

This status means that PayPal reversed the transaction.