Found a wallet but not sure what to do with it

BitcoinBitcoin
$19,461.31
‑0.13%
6D Ago
self.Bitcoin
I own my private IT business and i receive items from customers and recycling centers one of them was a external hard drive was in bulk which has a wallet on it, to be honest i am not a real crypto expert and i am not sure if it is just a backup but it is 500gb with almost 370gb full, i tried to check where i have got it from no luck and now i do not know what to do with it, any ideas!?