If a pawn reaches the other side of the board it can turn into any piece. There’s almost no reason to get anything other than a queen though so that’s what everyone always takes.
Only exceptions are cases where queening the pawn leaves the opponent with no valid moves but not in check, i.e. stalemate. That’s somewhat rare but it is important to watch out for. Sometimes you need to promote to bishop or rook instead.
If a pawn reaches the other side of the board it can turn into any piece. There’s almost no reason to get anything other than a queen though so that’s what everyone always takes.
Only exceptions are cases where queening the pawn leaves the opponent with no valid moves but not in check, i.e. stalemate. That’s somewhat rare but it is important to watch out for. Sometimes you need to promote to bishop or rook instead.