岩戸鈴芽 said:
See help:users for rough guidelines on what it takes to get promoted. For builder specifically, you need a decent number of uploads with not too many deleted uploads.
Evazion has also given slightly more specific guidelines on what it takes to reach Contributor status (forum #254926):
evazion said:
The way you get unlimited uploads is by being promoted to Contributor level. The way you do that is by proving your uploads really are high quality, by uploading a large number of posts and maintaining a low deletion rate. Generally the goal is around 750 uploads and a 5% or so deletion rate. There's no other way to get unlimited uploads except by getting promoted on merit.
While many on this thread may be more concerned about getting Builder status because it is the lowest privileged level most users can expect to reach, it is important to note that it is possible to skip Builder entirely and get promoted straight to Contributor. And even if it's not realistic for everyone, it is still technically possible to reach that rank in only a couple weeks. For example, python pip, who was promoted yesterday, has 816 uploads, with only 11 of them being deleted, and their account was created only two and a half weeks ago.