Calculating LED amperage usage
If these are standard \$120\:\textrm{V}\$ LED lamps, such as these, they will have stamped on them a "wattage." If you look at that page, you will see that these are rated with a "power consumption" of \$6.5\:\textrm{W}\$. Ignore the "wattage equivalent" ratings -- those are about how the lighting supposedly "appears" to a human when comparing it with a traditional incandescent bulb and not about the actual power consumption of the device.

So, let's say you had 33 of the above lamps in your track lighting fixture. This would mean a total of \$33\cdot 6.5\:\textrm{W}=214.5\:\textrm{W}\$. That would be about \$1.8\:\textrm{A}\$ when all the lights are on. (This is RMS, which means the peak, momentary current can be \$\sqrt{2}\$ more than that, or about \$2.5\:\textrm{A}\$.)

Now, all this assumes that the power factor of the lamps is 1. In reality, it could be half that much (in one you should NOT buy.) But they vary and the actual power factor for an LED lamp is hard to find when you are buying one. I tend to assume a power factor of about 0.9, or so, if I don't have any information. (But I honestly have no good justification for that figure. So I'm open to better advice on this point.) But assuming 0.9, then the circulating current would have an RMS value of \$2\:\textrm{A}\$ and a peak value of slightly over \$2.8\:\textrm{A}\$.

I'd want to plan \$5\:\textrm{A}\$ for your track lighting if you were intending to use those particular bulbs in it.