Android Studio VT-x

The instance type you've selected appears not to have that feature (VT-x) support.

Have a look at this release: https://aws.amazon.com/about-aws/whats-new/2021/02/introducing-amazon-ec2-m5n-m5dn-r5n-and-r5dn-bare-metal-instances/

Starting today, Amazon EC2 M5n, M5dn, R5n, and R5dn bare metal instances that can utilize up to 100 Gbps of network bandwidth, and Elastic Fabric Adapter (EFA) for HPC/ML workloads are generally available. Amazon EC2 bare metal instances provide your applications with direct access to the Intel® Xeon® Scalable processor and memory resources of the underlying server. These instances are ideal for workloads that require access to the hardware feature set (such as Intel® VT-x), or for applications that need to run in non-virtualized environments for licensing or support requirements.