tierlist.py

import requests
from collections import defaultdict

r = requests.get(url="https://korpershoek.me/srb2/highscores/api/highscores", verify=False)
data = r.json()
skins = defaultdict(int)
#three for first place, 2 for second, 1 for last, 0 otherwise
weights = {
    1:15,
    2:12,
    3:10,
    4:8,
    5:7,
    6:6,
    7:5,
    8:4,
    9:3,
    10:2,
    11:1,
    12:0
}

for map in data:
    for place, skin in enumerate(map['skins']):
        skins[skin['name']] += weights.get(place+1, 0)
for k, v in sorted(skins.items(), key=lambda x: x[1], reverse=True):
    print(f"{k}: {v}")