Will Taproot alter or affect Bitcoin that’s in exchanges, wallets, cold storage, etc?

I’m still fairly new and learning so I may not be wording the title correctly. I assumed that a change in a coins code would effect the actual coin itself. I thought that was how BCH had been created? I’ve read up on the topic and mega thread a decent amount, however still not understanding. Any input, info and even opinions are appreciated !! Will do my best to remember giving free awards to people who help (: Thanks in advance !!