It is not reliable to publish a paper quickly. Some illegal organizations or individuals charge high fees under the guise of publishing papers quickly, but in fact there is no real publishing channel, or the published papers are fake and shoddy products. In addition, the quality of papers is mixed, many papers lack scientific and credibility, and there are a lot of errors and inaccuracies.
Regular journals need to undergo strict review and evaluation, including preliminary review, peer review, revision and final review, which takes some time. Therefore, if someone claims to be able to publish a paper quickly, be careful and don't believe it easily.