I do not know the actoal SV-testnet blockchain size. But, if see to mainnet -
because of this is relative fresh fork of Bitcoin, blockchain size is close to Bitcoin's one, i.e. 200G.
Please, be careful:
BitcoinSV runs as a daemon on a Linux only, and there is not exists a GUI wallet.
It uses directory $HOME/.bitcoin to hold
blockchain and wallet.dat. As result, if you use Bitcoin on same
Linux server/account, then BitcoinSV will hurt your Bitcoins wallet.dat and
blockchain. I recommend backup or rename your .bitcoin before run SV.
Config command "zapwallettxes" does not work correctly. In my case,
it clears balance from wallet.dat, I restored it from backup.
I do not know the actoal SV-testnet blockchain size. But, if see to mainnet - because of this is relative fresh fork of Bitcoin, blockchain size is close to Bitcoin's one, i.e. 200G. Please, be careful: