I’m confused as to why you are asking this here. It sounds like you’re not talking about freeCodeCamp transactions, so does this relate to some personal code project?
freeCodeCamp does have some blockchain related content on freeCodeCamp News, but I don’t know if there’s anything that would relate to transaction fees.
Thanks for providing that context! It helps us understand what the question refers to. I don’t know much about ERC20 tokens, but hopefully someone else here does.