You spilled Ajax spray n wipe on your carpet will it bleach the carpet or can you leave it to dry?

It really depends on the quality of your carpet and which variety of Spray and Wipe that you spilled. At very minimum, it is best to stack paper towels and press them onto the spot to blot up as much of the liquid as you can. Even if it doesn't bleach, this will prevent it from becoming a stiff or sticky spot of the carpeting.