As long as you have a full size mount, get what you can afford with the reticule that you like.
I go for either the P4 or the Mildot myself. BSA has a wide selection for under $100. Yes there are a bunch others as well since scopes have been getting lower in price the past few years and a 22 doesn't usually NEED awesome optics to perform well. web shop a surplus or outdoors site and you will get an idea of what is out there.
If you have the 3/8/10mm mount your options will be more limited but there are still several manufacturers choices on the market.