Hi,
You can make any content you want in Construct 2 (as long as it's legal of course). We do not control or restrict what people make, what you make is your business.
However, all royalty free assets (including those bundled within Construct 2 and those sold in our store) are distributed under this license:
https://www.scirra.com/store/licensing
Please see section C.2:
[quote:4ri8kte4]Licensee shall not use the Licensed Content in a pornographic or defamatory manner, whether directly or in context or juxtaposition with other materials.
You'll need a Personal Edition license as soon as you take donations or make any other associated revenue from your creations.
Tom