Hi! Yes, you can use anything from the package to create free and commercial products! Than you can publish it on any platform you want. In the package there is a license file and forst point is:
1. GRANT OF LICENSE
Upon purchase, you are granted a non-exclusive, worldwide, perpetual, royalty-free license to use, modify and incorporate the source code and assets in this pack (the "Software") into your own projects, including commercial games, in an unlimited number of projects.