Calculating boost converter maximum current output
Calculation of the max current is not possible since you do not know the properties of the inductor.

Please be aware that the transistor used has only a max Vce of 40V. The desired output voltage of the convertor is 100 V. So there you need to change the transistor to a type with a Vce well above the 100V.

Why not simply load the output and measure the maximum current you can get. Since this is a small circuit there is no risk involved in doing this.

If you still want to do some calculations there are some nice appliclation notes from TI found here:

http://www.ti.com/lit/an/snva731/snva731.pdf 
http://www.ti.com/lit/an/slva372c/slva372c.pdf