swiss chess tournament


Plzzz suggest something who has any practical knowledge about this chess tournament format

There are a number of apps that can do it. Vega is free for up to 30 users or completely free on Linux. I'm sure there are other free options, though I haven't tested any in a few years.
I think it's much faster for you to read that (https://en.wikipedia.org/wiki/Swiss-system_tournament) than waiting for a forum to give you only part of this information.

Here are FIDE's rules for Swiss tourneys.
http://www.fide.com/fide/handbook.html?id=18&view=category