I don't know how you made that math, specially since you didn't even claimed your forked coins now. BCH and BSV are in a strong downtrend and they will soon be worth nothing.
BTC/BCH ATH ratio was 0.5, now it is 0.011
You certainly aren't going to quadruplicate your BTCs, you will, at the most, get 0.015 of each btc claiming all forked shitcoins.
Brother, I've been into Bitcoin long before the bull market of 2017. Bought 5 BTC and kept it in the cold storage wallet since early 2015. Now with a price of $44,000 per coin, my money has multiplied by a large rate. And this is without counting all of the Bitcoin forks that came after the Bitcoin Cash craze in August 2017.
Forked coins are basically "free money" for me. I do not care about their current price if I'm able to get some free cash in return.

I have heard a lot about Hardware wallets. But a much more affordable option is a paper wallet. I have done one myself with the new native SegWit address starting with bc1. The old cold storage wallet is based on a legacy address, so I've created the new one to help save money from Bitcoin fees.
Thanks for the guide btw. I'll read this carefully to safely split my shitcoins.

I don't recommend using mobile or any other online wallet for handling all your long-term coins, it's just too risky. You should use a cold storage setup or buy a hardware wallet. Make sure to carefully research about it, there's plenty of topics on this forum about it.
As for replay protection, when someone makes a contentious hard fork, they don't bother implementing it, because they want everyone follow only their chain. But when someone creates a forked altcoin, they do want to implement it, because it would make it easier for their users.
Thank you for the advice, brother. I've figured that myself when looking for the safest way to store Bitcoins in the long term. I found out two solutions: Hardware wallets and Paper wallets. Decided to go for the latter option as it's much more affordable for me. I might consider buying myself a Ledger Nano X later on.