Had Mohs Procedure on my Nose 2yrs Ago. Let Heal in by Secondary Intention. I Now Have an Indent Any Ideas to Fix It? (photo)

From the photo you submitted, it appears that the scar is slightly depressed and slightly red.  My treatment suggestion would be a minor resurfacing laser procedure to the scar itself  (which would stimulate collagen and help fill in the depression somewhat) as well as some attention to the edges of the scar (to help camouflage the edges to help it blend in and appear less distinct).  Laser options that would make sense would be a resurfacing erbium or co2 laser or a series of Fraxel laser treatments.  Filler would likely be of help but would be a temporary improvement whereas the laser treatments would be long lasting. 

I would recommend you see your Mohs surgeon who performed the procedure to let them know you would like to improve the appearance of your scar. Keep in mind that some degree of scarring is expected during the removal of a skin cancer. Many options are available from dermabrasion, to lasers, to fillers to cutting out the indentation and stitching the area up. A discussion with your Mohs surgeon will give you a good starting point and then you can explore your options from there. 

Your best option is to meet with the surgeon who performed the surgery and discuss options. It would be necessary to examine the wound and talk to you. If the surface is well healed and the only problem is depression, a soft-tissue filler (e.g. Restylane, Juvederm) might be useful. In some cases dermabrasion might help. And in other cases excision of the scar and scar revision or repair with a flap might be necessary. Best option... check with your doctor. Good luck.