So, can the energy created from the tiles be sold directly to an electricity provider or stored in the power-wall to be sold to the electricity provider during the evening?
That depends on where you live.
Germany loves private owners to profit with their own electric project.
Most USA utilities treat private owners as competitors so it's hard to earn profits. You are lucky if you can break even after all the fees.
Ideally, even with just PowerWall alone, you can profit by arbitrage: Charge up at off-peak hours then sell your stored electricity during peak and expensive hours--buy low, sell high.
With solar tiles, of course you can produce your own electricity as well.