QWERTY refers to the layout of the standard keyboard, used on older style typewriters and modern computers.
If you are asking how many qwerty keyboards are in existence, I'm sure the number is astounding.
This is the layout of a standard dvorak keyboard. Obviously, it's very different from qwertys.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -W---Y-. That is, seven letter words with 2nd letter W and 6th letter Y. In alphabetical order, they are: qwertys
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern ---RTY-. That is, seven letter words with 4th letter R and 5th letter T and 6th letter Y. In alphabetical order, they are: qwertys
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -W---YS. That is, seven letter words with 2nd letter W and 6th letter Y and 7th letter S. In alphabetical order, they are: qwertys
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -WE--Y-. That is, seven letter words with 2nd letter W and 3rd letter E and 6th letter Y. In alphabetical order, they are: qwertys
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern Q-E--Y-. That is, seven letter words with 1st letter Q and 3rd letter E and 6th letter Y. In alphabetical order, they are: qwertys
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern --ER-Y-. That is, seven letter words with 3rd letter E and 4th letter R and 6th letter Y. In alphabetical order, they are: overdye overeye qwertys
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 5 words with the pattern -WER---. That is, seven letter words with 2nd letter W and 3rd letter E and 4th letter R. In alphabetical order, they are: qwertys swerfed swerved swerver swerves
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 6 words with the pattern --E--YS. That is, seven letter words with 3rd letter E and 6th letter Y and 7th letter S. In alphabetical order, they are: deejays leeways prebuys prepays qwertys veejays
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern QW-RT--. That is, seven letter words with 1st letter Q and 2nd letter W and 4th letter R and 5th letter T. In alphabetical order, they are: qwertys
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -WE--YS. That is, seven letter words with 2nd letter W and 3rd letter E and 6th letter Y and 7th letter S. In alphabetical order, they are: qwertys
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern QW---YS. That is, seven letter words with 1st letter Q and 2nd letter W and 6th letter Y and 7th letter S. In alphabetical order, they are: qwertys