What opening is the best?

I think the French opening

There is no such thing as best opening. If there was a best don't you think that all players would be playing exclusively that opening?

Spanish, Italian, Sicilian, king gambit, queen gambit, etc etc etc are all very good openings.

E4 is best by test

The ones we already mentioned are all very good. If you want to see more you can check GMs games and see what openings they use. Don't look for the one and only best opening because there is no such thing.

Always best to greet the player, and get a chance to see what they're all about.  Make sure to play honourably, and the best moves tend to come naturally!

It's a good idea though, to always focus on a slow pace game; and make sure that your best pieces only come out later.

tbh i dont really know chess i dont know opinings ether how do u do a opaning?

The Grob or Bongcloud.

i like the grunfeld

The best opening is the one you are most comfortable playing based on your current needs (if a draw will clinch sole first in a tournament then a drawish opening may be the best).

A weak opening you are comfortable with will generally serve you better than a better opening where you are uncertain of the ideas and concepts of the opening.

I would say the Bongcloud.

https://www.chess.com/forum/view/chess-openings/the-lifetime-repertoire-reliable-ambitious

If this topic caught your attention, I suggest you look at the detailed article I wrote.

I like opening a cold bottle of Moosehead beer.

Chess Openings Resources for Beginners and Beyond...

https://www.chess.com/blog/RussBell/openings-resources-for-beginners-and-beyond

Good Chess Openings Books For Beginners and Beyond...

https://www.chess.com/blog/RussBell/good-chess-openings-books-for-beginners-and-beyond