A valid view is one that passed the checks and went into your payment.
A view is not counted if:
— it is shorter than the required minimum (the number is stated in the task);
— the video gained views abnormally fast: a spike with no growth in likes and comments is the classic trace of inflation;
— engagement does not look organic: tens of thousands of views with a handful of reactions;
— the post was deleted or made private before the check finished.
Every task has a minimum view threshold. Until the video reaches it, nothing is paid — this keeps out videos filmed just to tick the box.
Views are counted more than once: the platform re-reads the statistics for two weeks after publication, so a video that takes off later still earns.
Inflating views is pointless: it is not paid, and it raises your account's risk score. After a few such submissions withdrawals move to manual review, and a ban may follow.