Certain fields from attribute table not displaying using ArcGIS Pro Desktop using symbology

[IainBinning]

Hello,

I am using a trial version of ArcGIS Pro.  I have an attribute table which I have imported as a shp. file (contains disease rates over various intervals and regional boundaries) using the "Add data to map" function in the toolbar.  I then right click the shape file and click "symbology" using the "graduated colour." I then select the field I want to display and appropriate scale.  Some fields in my attribute display exactly as I they should.  However, I can't get for of the fields (columns) to display on my map.  Both the data from the shp. file and topographic map disappear.  I can't seem to figure out why.  Any suggestions or things to check would be much appreciated. Thanks!

[DanPatterson_Retired]

open the table, in the top right, click on the bars and show all fields, if it available... In this example, it is greyed out since all fields are showing, if there are hidden fields, the option will appear