score:2
The best I could find so far is http://www.newperuvian.com/most-dangerous-areas-of-lima-peru/ (mirror):
But it only ranks the worst 12 areas (which are Lima districts), and isn't more precise than the district level.
Reddit user exim001 pointed me to https://especiales.elcomercio.pe/?q=especiales/mapa-del-delito-ecpm/index.html:
[This map] shows the crimes occurred in certain streets and districts of the capital.