Welcome advnarayan on the Forum !
English versions of Luc Junior, Jehan Pistolet, Benjamin, Valentin don't exist. And we can't translate this comics because like Genug said, we don't own the right and secondly, being a translator is a profession we are not : Transalte french puns in english isn't easy.
But, here, you can find a lot of unpublished or rare text & comics related to Goscinny in french.
With webtranslators and dictionaries, you can make your own translation understanding much.
I'm happy to see that an India is a fan of Goscinny's work, looking for more than Asterix and not only Iznogoud, Lucky Luke and Little Nicolas, especially searching the unrecognized Goscinny's comics.
I hope you find your "sunshine" here !
Don't hesitate to reply on threads you want.
Vidéos sur Goscinny & ses personnages & Forum Pilote !