Open ES File Explorer File Manager
1) In case you have Flappy Bird installed already, uninstall and reinstall a neat copy and receive a high score of any amount.
three) Open "Tools" menu on the left
four) Make sure "Root Explorer" is on.
6) Click on the folder labelled "data"
five) Go in to the root file listing under "/device"
8) Search the folder for the Flappy Bird file (this is done most basically by searching "flappy" in the search bar)
7) Inside the information folder, search for another folder labelled "data" and open it.
ten) Open shared_prefs
9) Open the Flappy Bird file
12) Select ES Note Editor when prompted
11) Open FlappyBird.xml
13) Click edit in the upper left
14) Alter the score value to whatever number you wish your high score to be.