From the Power Apps Teams app
When you originally created your Power App, chatbot or Dataverse table, you would have selected a Team for it to live in. You can see all these creations by launching the Power Apps app. Go to the Build tab > select your Team > click See all. Simply select the components you want to export, then click Export >Export as solution.
However, if you do have any Power Automate flows you need to export as part of the solution, you may notice that they do not appear in the list (at least at the time of writing this article). You have to select Cloud flows from the left side to view these. While you do have the option to export these flows, you won’t be able to group them as part of the rest of the solution from here.