What kind of return should I be looking for when selling covered calls and covered puts?

I tried searching but could not find an answer.

Lets say a stock is $100 and I am looking at dv 20 at 30/45/60 days out, What kind of premiums should I be looking for on calls and puts % wise per option?

If yall got some educational links please post! Not exactly sure what kind of returns I should be look for under those circumstances, or for that matter different DVs and option lengths.

Thank you for your time,

Emilio