I'm currently working on a project called The Legend of Zelda: Scratched, and when I download it and check the info, it says it is 2.1 MB. Is that a lot for a Scratch project?

How large exactly is a large project?

It's extremely low, since Scratch accepts up to 50 mb per project, I think…

The project has over 100 scripts and many blocks

Also, you're right, I checked it, the 2.0 size limit is 50MB, but I wouldn't compare it to that since the maximum filesize in 1.4 was 10MB. I think the ST used 50 because they didn't think people would get very close to it.

EDIT: The largest project I have ever seen in 5 years on Scratch was Turtle Town by Alian something something. I think it was numbers. Anyways that project was 8.7MB and had 999 scripts.

So I don't think 50MB is really anything to compare to.

Also, your average Gamecube game is 1.4 GB (1433.6 MB) Which includes rendering, textures, programming, etc. So I'd say based on that, a pretty large project is 1-2 MB and a large project is like 3-10, and a superproject is above 10.