@ferpioli this collection also looks incomplete–you’re going to want to make sure you’ve worked through all of the steps in the first two folders and saved your requests. When you’re done, copying the collection link into the final request Test collection will indicate whether your collection is ready for submission or not. 
Hopefully you saw a confirmation message indicating we will check the submission and be in touch within a couple of weeks… 
where to send t he link once test collection shows all tests passing?
Hello @szymon.kozuszek ,
Welcome to the Community 
Still in your Test Results section, you have one failed Test, means something else is pending! It should look like:
After getting 10/10 passed, you should copy the public link of your collection and submit it in http://bit.ly/student-expert-submission\
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Set env variable from script and set next request | AssertionError: expected [] to have a length above 0 but got 0
This error is coming can anyone tell me what I am doing wrong
Hello @carrycooldude Welcome to the community 
Please spare a moment to read this post
Also please have a look at the similar query answered here