Do you mean you have a Sceptile with all those moves already? It's just I didn't understand how you got all those moves onto one Sceptile. o-o
Breeding those moves onto a Treecko will only work if your breeding parent with those moves is male.
Essentially, male parents will transfer any compatible moves to the offspring, female parents will determine the species of the offspring.
I think you mean you want those moves on a Treecko, because I can't see any perceivable way where a Treecko can learn all those moves. It can only learn some through breeding
I think it's best breed Crunch and Dragon Breath onto Treecko, since Bagon/Shelgon/Salamence know both those moves. If the Salamence is male and has both Crunch and Dragon Breath in its moveset, the resulting baby Treecko will know Crunch and Dragon Breath.
So what you need is:
- a male Bagon/Shelgon/Salamence with Crunch and Dragon Breath in its moveset
- either a female Treecko/Grovyle/Sceptile OR a Ditto
Have a look here; it's the list of moves a Treecko can learn via breeding in Gen III.