Where to Find and Catch Sceptile
From Pokemon Go Wiki
Sceptile are found and captured in Nest and Habitat locations.
Nests
Sceptile Nests are locations that consistently spawn Sceptile.
Habitats
Sceptile Habitats are spawn locations where Sceptile is likely to be encountered, but not guaranteed the way a Nest is.
Additional Tips and Information
Best Nests
If you know a really good nest or any of the nests above is really good, list them here: