We do not have a built-in feature for offering gift cards. But Shopify provides a feature you can enable on your store, allowing your customers to use it for any event. Once you create an event, the event is automatically added as a product to your store, so gift cards you make in your store can be used to purchase a ticket.
Here’s a quick video on how to create and sell gift cards in your store
If you need any assistance setting up gift cards, let us know!