VMs are included in the free trial. In addition, during the first month, you have a $200 credit, which allows you to try a practically any service, with exception of
Azure credits may not be used to purchase Azure support plans, Azure DevOps, Visual Studio subscriptions, Visual Studio App Center services, Azure ExpressRoute, third-party branded products, products sold through Azure Marketplace, or products otherwise licensed separately from Azure (for example, Microsoft Azure Active Directory Premium).
More at https://azure.microsoft.com/en-us/pricing/offers/ms-azr-0044p
hth
Marcin