Get Bitcoin legacy address. Legacy addresses are the original BTC addresses. Old style.
Public Compressed Address. You can SHARE it everywhere.
Public Compressed Key (SHARE)
Secret/Private WIF Compressed Key (SECRET) Do not share it! Only it's needed for some Wallets, but carefully!
https://www.bitcoin.com/tools/cash-address-converter/
Save all details in .txt file on your PC. That's all. You have Bitcoin, Bitcoin SV, Bitcoin Cash Wallet. Now it's time to "invest" :)