acs712 (20a) dc volt-ampermeters """(HELP ME)"""

hi dear friends,

I have a 20 amp sensors (acs712) 100 mV/A

"DC 35 v" I want to read data from "15ampere"
I need the code to help...

10k/1k resistance "ReadAnalogVoltage" dc 35v okey..

but I can not read amps.

my display i2c lcd;
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

code help please...