editing get request before send

there is a game on this website that im playing and at the end of the game it gets your email and name and city and sends your score via a get request like this :

curl 'http://ift.tt/2l3BArf' \
-XGET \
-H 'Accept: */*' \
-H 'Referer: http://ift.tt/2m5dwBK' \
-H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/603.1.20 (KHTML, like Gecko) Version/10.1 Safari/603.1.20'

what i want is to change the [score]=165 value and set it to 2147483640 and send it. i tried to disconnect internet at send time , edit value , connect internet and send again but it gives 404 how can i do such a thing ?