I generate the AAR file of my library running the command ./gradlew sharedbundleReleaseAar anyone knows how to create a github action to execute that command an generate a release on my repo?

you can use any command by calling:

- name: Run gradle task
        run: ./gradlew :app:myTask

when it comes to release, what do you mean exactly? For publishing/releasing the kmp lib you can check : https://github.com/touchlab/KMMBridge

i dont know too much about the github actions

This is very general question. Did you go through these tutorials, docs and samples? https://kotlinlang.org/docs/getting-started.html There is a lot of materials there

I have my library ready in kmm. And currently I generate my aar from the terminal with the command I put above. But I want to do the same from github actions.

As I wrote, the command will generate the aar. What do you want to do with this file later? Keep in artifacts? Send to another repo? Store somewhere?