I want to create an Event Grid which will trigger an event to storage queue if any change occurs in Storage Account.
In short, if any storage account is updated it will trigger an event and send a message in storage queue - is this possible in Azure?
You should subscribe to the resource group. The document Azure resource group as an Event Grid source described all details.
Also, have a look at the document Storage queue as an event handler for Azure Event Grid events for receiving the filtered events emitted by resource group.