Annoyingly, the answer you will get is "it depends".
It depends on the nozzle design, grain density, grain profile (because more surface area determines burn rate).

Sugar rockets supposedly have a specific impulse of 115 to 130 seconds, so if you have an estimate for your mass flow (you can get a very rough average by dividing propellant mass by burn time), you can calculate your theoretical average thrust.

Kinda like asking — my car has a 16 gallon gas tank, how much torque does my car output?

We’d need to know engine displacement and gearing to determine a ballpark for torque, and it would only be an estimate

You’ve given us total amount of fuel, which is how much energy you have to spend. But the burn rate and nozzle design determine thrust (among other secondary factors mentioned in this thread). Imagine burning 13 lbs fuel on the ground. What is your thrust? Very low. Ok, say you have a super small nozzle and burn rate. Burn lasts a long time, but low thrust. Huge nozzle and high burn rate? Very large thrust for a short time

Nozzle design is important.

I remember this from reading The Rocket Boys

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