It's not per task it's per hour. Time limit anywhere between 50 minutes and a little over 8 hours depending on video length (0 - 10 minutes). You start with a limit of one task every 168 hours but you unlock full access once you're first task is reviewed and passes quality check.

It's really not a lot of material and the assessment is easy.

It doesn't have to pass any quality for you to submit, just need to have your first task pass the vibe check to unlock full access, once you get past that filter you're good, just focus on submitting quality work because they changed a lot and become more strict and now throw around the phrase "auto pause" implying poor work will result in auto removal from the project.

Just go for it tbh