I think anything claiming to be a store of value, has to be stable long term. Neither BTC nor BSV will be stable the next 6 months or next 3 years.
However, I think the end game for bitcoin is to be the most stable asset in history. We are on a path to get there, and it will probably be an S-curve. It will never become completely stable. 100 satoshi will probably buy more in the year 2110 than in 2100, because everything gets more efficient over time, but the whole speculation aspect will be gone and moved to business investments.
The current volatility is why I have become a big fan of more stable tokens based on BSV, and I hope my company can deliver practical solutions for this with KaChing. A stable token like this could be a national fiat based on Tokenized, but it can also be a form of giftcards for retail chains. It's good to have the story of mPesa in mind when thinking about these issues.
If you expect BSV or BTC to increase in value over time, call it an investment. Not a store of value.