I created a repository (without link to git) for Google Dataform and a workspace.
I initialized a first setup and pushed those first files.
Where can I see the repo and all the commits I do in there? Looked in Cloud Storage, Artifact Registry, Cloud Source Repositories but can't find it.
Dataform does not have all the functionality of Git so without linking to Github you won’t be able to see the repository. For your requirement, you can create Dataform repositories (Git repositories containing Dataform code, essentially) and create code workspaces attached to those repositories. Edit code in those workspaces, push the results to the relevant Git repository. You can also compile the repository/workspace Dataform code to Directed Acyclic Graphs (DAGs) of executable SQL and can also execute the compiled DAGs against BigQuery.