What type of export are you doing. If you are exporting/saving to any raster-based format (jpg, tif, etc), pixellation will occur. It is what happens when you enlarge a picture because the space gets greater between each image dot (pixel). If you save the file as a vector image (.ai, etc) it should not occur because a vector is continuous from one end to the other.
thank you i will try that
Ai worked first try but when I tried saving as ai again it gave me the same problem
Retrieving data ...