You can refer to the following link for information regarding Max10 IO and configuration:
User Flash memory) (UFM) is NOR based Flash. I didn't see there is specific requirement on current for User Flash memory (UFM) either in Max 10 datasheet nor user in guide.To Estimate Power, Intel provide the Early power Estimator sheet and peak current requirement given below link, https://www.intel.com/content/www/us/en/programmable/documentation/myt1393986555723.html#myt1393987293874
Also one note on this during UFM operations, make sure to follow the maximum slew rate requirement for power supply ramp down to protect the device from damage. Detail information given below link
Also make sure your design not exceeding the above link table 2 : " Maximum Power Consumption of VCC_ONE for Intel® MAX® 10 Single-Supply Devices"
Just curious, Is that any specific reason you looking UFM module current value?
Thank you .