Hard to say without seeing the entire plant. Make sure you keep it right in front of a sunny window. The repotting may be the cause of the leaf discoloration.
Remove any soil you added to the surface of the rootball. Then, water your Fig as soon as the soil surface feels dry. Make sure any excess water has a way to escape through bottom drain holes.
See my blog post on this site for instructions on Fiddle-leafed Fig care.
https://garden.org/blogs/view/...
