My Syrian hamster suffered from a fall and is limping

[souffle]

You should really see a vet if your hammy is not putting any weight on the foot. The front legs are important for eating and holding food as well as for emptying the pouches. If it is painful hammy may need pain relief. Even if the vet says it will heal then they will still give pain meds. For now you should remove the wheel and keep your hammy calm and warm. Leave food and a small water bowl in case they cannot stand up easily and make an appointment to have this checked out. If the foot turns black this is medical emergency.