How to take the LFCS

Hello.

I am very sorry if this is a rudimentary question.

This bootcamp has led to an LFCS item on my portal.
If I need to take the LFCS, is there any procedure I need to follow to take the LFCS?
I gave it a try once, but it remained in a loading state.
If this behavior is a mistake, I would like to know how I can take the test.

Thank you very much for your help.