I had already installed PTC mathcad Prime 5.0There is a converter however it is been blank out which mean i cant click it at all

You have to install the older (and better) version, Mathcad 15, additionally!! Thats the PTC way of making things unnecessary complicated. Mathcad 15 is needed for the converter in Mathcad Prime to work!

And when you have installed Mathcad 15, you may consider looking at the file with MC15 without converting it to Prime format. You will notice that a converted file will need some post processing. Depending on the features used in the original MC15 file its also possible that Prime will not be able to do the same calculations because of missing functionality in Prime. But on first glance it look that your sheet uses just very basic features which should also be available in Prime. The plots in Prime will not show any grids which is a no-go in logarithmic plots. If you want to see grid lines, you will either have to use workaround routines which Luc and also I posted in prior threads or you will have to create those plots from scratch using the very badly implemented third party plot module which was introduced with Prime 5. If you are working in high resolution with a 4K Display you will notice that this plot module is unusable as of the much too tiny fonts. Again - its the PTC way ...

Valery already posted the converted worksheet.

See attached a pdf-print so you can see what the sheet looks like in Mathcad 15.