internet is a inexhaustible source of information. dragon balll, being one of the most popular franchises in the world of anime, occupies an important place in the sites that are dedicated to closely following this area of entertainment.
That is why every day we see information that is sometimes not accurate. This is what happens with a design that is being used by some websites. Goku in the style of a Boy Scout and Bulma, as a cute little cowgirl were supposedly illustrated by Akira Toriyama and later discarded in the original manga sketches.
It started as a false rumor that little by little has been spreading on the Internet. As Toriyama has stated in various interviews, his inspiration for creating Goku was a character that he had previously drawn in one of his previous works, called Tanton.
The Japanese mangaka wanted to create a character that was similar to Tanton, but could evolve and change throughout the series. As for Bulma, Toriyama’s inspiration was a girl he knew in real life, who was always interested in technology and gadgets.
So most likely those images circulating on the internet of Goku and Bulma as a cowgirl and a Boy Scout are false and part of unauthorized speculation. Akira Toriyama never conceived these characters with these characteristics and those images are only the result of the imagination of the fans or of some artist who decided to create them on his own.