What is the best gambit for beginners from white


Enjoy the Vienna Gambit while it lasts, because eventually you'll start playing against people who do know the correct response.
I've never tried it myself, but I've heard great things about the Evan's Gambit (displayed below):

Introduction to the Vienna Game & Gambit…
https://www.chess.com/blog/RussBell/introduction-to-the-vienna-game-gambit
Introduction to The Italian Game, Evans Gambit & Two Knights Defense
https://www.chess.com/blog/RussBell/introduction-to-the-italian-game

Enjoy the Vienna Gambit while it lasts, because eventually you'll start playing against people who do know the correct response.
"Eventually" = at the grandmaster level.

You don't choose a gambit, as a beginner because its tricky, or most beginners can't defend against it,or some such nonsense. You choose a white gambit, a a beginner, because playing it properly emphasizes and reinforces good chess principles as well and forcing a player to become tactically proficient and develop a sense of timing. Choose a 1.e4 gambit as white, these lead to wide open boards and cut and parry games. Play a large number of blitz games utilizing various 1.e4 gambits and choose one that appeals to you. The Center Game is a good opening for beginners, Lokk at the Center Game,Danish,Scotch, Evans and Kings gambit; when the Petrov gets thrown in your face try the Cochrane. Find a gambit for each semi-open defense. Kick the Queens gambit to the curb, don't play 1.d4 as a beginner. Develop a favorite obscene response for anyone who criticizes your favorite gambit. Good hunting.

icbm is good but most of the time it does't work
And when it doesn’t work u get cooked
Every player chooses their own gambit some choose the englund some choose the birds opening and also some choose the scholars mate every gambit is unique with their own purpose you can choose any one of them

Danish Gambit....
CRUSH EVERYONE With The Danish Gambit - GothamChess...
https://www.youtube.com/watch?v=Nd7ZiSvdwN8
Danish Gambit: Chess Opening Tricks to WIN FAST: Center Game Traps, Tactics, - Chess Talk...
https://www.youtube.com/watch?v=jpeAObiYLFk
Boris Alterman, author of "Alterman Gambit Guide" on the Danish Gambit...
https://chesslessons.wordpress.com/category/danish-gambit/
A site featuring the Danish Gambit, and many others...
https://www.ianchessgambits.com/danish-gambit.html