6 KB! [1024 kilobytes (KB) are in a megabyte (MB), and 1024 megabytes are in a gigabyte (GB) and your computer probably has 16-64 GB of storage!] 37 blocks! (about .03 of this: https://scratch.mit.edu/projects/410656358/ )
credit to @Bazza18 for 1,000 block project