Are there enough 64 GB EMMC for the laptop?

Are there 64GB EMMC and 128GB SSDs on the laptop? How much can you download on it?

Regardless of RAM / graphics memory, you can theoretically download 128GB to disk.

Windows 10 consumes 15-30GB, and Office about 3GB.

If you do not want to save many photos or movies, and do not need many heavy apps / programs / games, that's enough.

Apart from that, eMMC is better suited for small files, less so as to save movies, and so on.