Playing trappy openings won't help you to improve your chess, in the Danish Black has plenty of defenses that offer him easy equality or a big advantage (he just has to memorize one forced sequence to reach a draw endgame) I wouldn't mind playing against the Danish at any time
Anyone Knows How to play danish gambit ?

I hope u realise that QE7 isn't even the best move for black. Taking the pawn is better
Wrong.
For class level players, there are 3 options which are better than taking the pawn:
3...d5 4.exd5 Qxd5,
3...d5 4.exd5 Nf6, and
3...Qe7
Taking the pawn is a riskier option, and the engine's evaluation is completely irrelevant.

Engine evaluation is relevant
Of course it isn't.
For an engine, every position is rational, and also an engine does not care about positions where the slightest mistake can be fatal.
For a human, these two factors are the decisive ones, and not a fluctuation of plus or minus 0.5 (or more than that) in an engine's evaluation.
Example: This is a book position (from the Sicilian 4 knights), and it's Black to move.
What does your beloved engine say here, who is better, and what Black should play?

Your position has nothing to do with the Danish Gambit. The engine DOES matter. Please just admit it, and stop arguing
While it's true that uncle Einstein has advised never arguing with guys like you, he was rather a mediocre chess player, so I don't have to take his advice too seriously.

Your position has nothing to do with the Danish Gambit. The engine DOES matter. Please just admit it, and stop arguing
While it's true that uncle Einstein has advised never arguing with guys like you, he was rather a mediocre chess player, so I don't have to take his advice too seriously.
Who is uncle Einstein?
....

Engine evaluation is relevant
Of course it isn't.
For an engine, every position is rational, and also an engine does not care about positions where the slightest mistake can be fatal.
For a human, these two factors are the decisive ones, and not a fluctuation of plus or minus 0.5 (or more than that) in an engine's evaluation.
Example: This is a book position (from the Sicilian 4 knights), and it's Black to move.
What does your beloved engine say here, who is better, and what Black should play?
Your position has nothing to do with the Danish Gambit. The engine DOES matter. Please just admit it, and stop arguing
The engine could play a line where there's only one good move each move, but a human would need to be the strength of Bobby Fischer to do so. Chances of that are minimal. @pfren has a point. If an engine says a position is winning, if you can't convert it into a win, then the engine's analysis doesn't matter.
At low levels, the Danish Gambit can be a deadly surprise, but Schlecter's d5! takes all the fun out of it:
5...d5 just kills Black's advantage to get a safe position, and 4.Bc4? should be replaced by 4.Nxc3! which is the right approach for white (about equal, but with plenty of play for both sides).
This is theory
I think that white has not enough compansation
In this position you should close diagonals for black
"When we have two bishop we are winning" reallynot