Of course you can't do shit with those

Your best payload are either a 2 250 or 1 500.

And then 2 type of torbs to pick from.

Your main guns are the worst 20m on USA , and your rear gunner is a dual 7.6mm, good luck with those.

Buuuttttt, the next one, the SB2C-4 and 5 on the french are becoming better.

You have 2000lb total bombs, which aren't enough for a base, however it's the gun upgrade that might interest 40

4 extra 50cals, enough to take out a bunch of pillpoxes or doom a fighter with 6 guns aiming at it, makes it also a usefull bomber hunter

In term of naval battles, you could grind it there by dropping a torb on a stationary target.