Queiroz brushed aside questions about the absence of midfielder Thomas Partey from the game due to a Canadian travel ban and visa issues.
"With the football we played today we can count on Ghana to do something," he told reporters.
Queiroz, 73, was not scheduled to go to the tournament in Canada, Mexico and the United States until April when Ghana appointed him in place of Otto Addo, fired in March after a series of disappointing results.
The Portuguese, however, complained about the rough handling of Ghana players by the Panamanian side, and said his team were "naive and not aggressive in the first half."
Ghana had to replace goalkeeper Ati Zigi at halftime following a collision.
"Not sure," Queiroz said about Zigi's availability for the next game against England. "It is early and this kind of injury it is only after 24 to 48 hours we can be sure."
FIFA World Cup 2026
The 2026 World Cup will be held from June 11th to July 19th in the United States, Canada and Mexico. The tournament will feature 48 national teams and will be played in 16 modern stadiums.
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