[judge2020]

The OSM data license would still apply here, meaning you must attribute them [0].

As for the visuals of this map, chances are the MIT license for the repository applies to it as well [1] [not a lawyer].

0: https://wiki.openstreetmap.org/wiki/Legal_FAQ#3a._I_would_li...

1: https://github.com/anvaka/city-roads/blob/master/LICENSE