check best pratices ans security compliance for AWs accounts

In addition to what Matt-B said in his answer, we also offer the AWS Well-Architected Tool -- which will allow you to run through the six pillars (which includes a Secuirty pillar) of our Well-Architected Framework for your workloads. This tool will generate actionable findings for you and your team to prioritize and tackle and is closer to a "checklist" style.

I would start by looking at The AWS Foundational Security Best Practices standard. The AWS Foundational Security Best Practices standard is a set of controls that detect when your deployed accounts and resources deviate from security best practices. See https://docs.aws.amazon.com/securityhub/latest/userguide/securityhub-standards-fsbp.html

You can enable this control in Security Hub and start to get a good idea of how your environment fairs against AWS Foundational best practices. See https://docs.aws.amazon.com/securityhub/latest/userguide/securityhub-controls-finding-generation.html