93-94 prizm radio unlock code

[flipboitwo3]

i have a 93-94 (not sure exact year) prizm that i got from my grand parents who go it from my auntie. the problem is they changed the battery at one point and did not have the code for the radio and now the manual is MIA. so is there a way i can get the code for free cuz i need it by friday. and i did the whole "hold down the 2 and 3 and write the code" thing. the code i got was "0513" so now wat can i do with this?

overall how do i get the code asap??