Rate my sceptile. i think this is a good moveset.
Sceptile level 37
Drain punch
Energy Ball
leaf blade
quick attack.
Okay, you could use a bit of help here:
#1 rule of teams, you almost never need two attacking moves of the same type, especially when they are as similar as Energy Ball and Leaf Blade.
Look at it's stats, if it has higher Attack, go with leaf blade, otherwise, stick to energy ball.
As for the other moves:
It looks like you are leaning toward physical moves, so here's a few good physical moves that you may want to try out:
Leaf Blade (If you are using physical moves, this is the epitome of grass attacks)
Dragon Claw (really only good vs. dragons though)
Earthquake (hits most anything for good damage)
Iron Tail (another pretty good move, hits super effective against ice)
Rock Slide (This covers all your weaknesses except poison, which earthquake would hit super effectively).
Otherwise if you are leaning toward special:
Energy Ball (A must)
Dragon Pulse (Just like Dragon Claw)
Focus Blast (Bad accuracy, but great damage)
Hidden Power (Find out what type it is, Fire, Ice and Rock work best, although getting anything other than grass, dragon and fighting is nice)
Unfortunately, Sceptile's Special movepool is limited in this game. You can take out one of the above moves for a support move like toxic, swagger, or protect depending on what fits your style.
Just remember that Sceptile should be able to outrun almost everything near its level in-game, so it will get at least one hit in on its opponent. Unfortunately, if you are confronted with a fire or flying type, you would probably be better off swapping something else to combat it better.