Android Developer Courses
Google currently offers excellent Courses and Pathways for ‘Modern Android Development’ with Kotlin, Jetpack and Compose:
Training Courses
→ 
→ → Jetpack Compose for Android Developers
Misc
Modern Android App Architecture
Modern Android App Architecture
A solid introduction based on articles and videos.
Kotlin coroutines
Certificates
Currently registrations are closed, probably being updated to the current stack.
A free certificate covering best practices for the Play Store.