In order to go to the Asset Store, please follow the steps below:
1- Tap 'Create', located on the bottom right of the screen.
2- Tap 'Create New' or a project thumbnail of an already created project.
3- Next to the video preview screen on the editing page, tap the Asset Store icon (store front icon).
4- You can use the search bar and categories to find assets to download for use in KineMaster projects.