Let’s get straight to the point, in order to change the values in borderlands such as much money, eridium, stats points, … you will need a program called Cheat Engine.
For this, download the program here : https://www.cheatengine.org/downloads.php
On the link above click here to start the download:
Then “ I accept the agreement” and “Next” :
Then choose the path where you want to download Cheat engin on your computer
During the installation process cheat engin asks if you want a web companion, I highly suggest you to decline this as it will modify your browser settings :
After the last step above the program will start downloading.