My heat won’t work after I fixed the motor and fuses

Hello, are you saying you have only cold air blowing, or you have no air blowing at all? If there is no air blowing, you'll have to check for power at the motor. If it's not present, you'll have to trace the circuit back to the point where the power was lost. I can't propose a list of components to replace, because it could be as basic as a wiring repair.