Thanks for your prompt suggestion. This works when the legends are in 2 rows. How about if they all need to be in the same row? Can we make them equidistant in that case?
You can adjust the space between two legends If you follow the Option 2.
If you hover between the two legends you will get a vertical dotted grey line. You can drag that vertical line left or right.
See the screen shots.
After reducing the space
My suggestion If you have more then five legends then arrange items in multiple columns will be a good approach. Because when you publish your dashboard your single row legends appears with a scroll. To avoid such situation use multiple column option. Also you can format (reduce) the legend fonts to get some more space.
Let me know If you've any query.