The total Bitcoin received is the sum of all BTC sent to an address over time – like your total earnings.
Your Bitcoin balance, though, is what you've got right now. It's the total received minus any BTC you've spent or sent elsewhere.
Think of it like a water tank: "total received" is all the water poured in ever, and "balance" is what's left in the tank after some has been used or leaked out. Keep track to stay afloat!