If you've been tracking 'Blue Lock' like I have, the basic rhythm is pretty straightforward: new chapters are released as part of Japan's 'Weekly Shōnen Magazine' line-up, so the story is intended to run on a weekly cadence when it's on schedule. That means, in practice, expect roughly one chapter per week while the series is actively serialized. However, weeks off happen—manga magazines take occasional breaks for holidays (Golden Week, New Year issues), and authors sometimes pause for health or scheduling reasons. Those gaps can turn a predictable weekly drop into a biweekly or irregular pattern for short stretches.
For English readers, the timing depends on which official service you use. Kodansha's English channels and other licensed platforms may simulpub some chapters or post translations within days, but physical English volumes arrive months later because they collect many chapters. I usually watch the official publisher accounts and the magazine's release calendar, and that keeps me sane when the schedule slips—plus it’s fun to speculate who's going to get spotlighted in the next chapter.