unable to get the results on spreadsheet despite running a code and it saying execution completed

Hi guys I am a total noob please if sombody can help

I have a live portfolio in my spread sheet so IN Cell E32 the % change in portfolio gets updated on real time basis, now I want to get the % change every day so I copied a code

I went to my google sheet, clicked on extension and then on add script

Now there I pasted my code and clicked on run, I did this some 10 times but nothing is happening on my google sheet, can somebody please help,

I also dont know how many times I might have run the code so I need help in deleting all these codes executing as well

the code is as follows
enter image description here

also if sombody can explain me, once this code runs how do I run another code because every time I open this add script I can se the old code only, dont know how to add a new one

I have explained everything above