If you have unlimited budget then you have three choices:
1) fix a number that you say "I don't want to spend more than this, it's insane", and then we help you with a build with this new budget.
2) fix your priorities. If it is for gaming, then you may want to think if you want more than one monitor, etc. Then look for the prices of the stuff you want (we can also help) and buy that.
3) just make a list of all the possible parts a computer may have, and buy the most expensive option for each part.
I guess 1) and 2) make much more sense. You can spend the rest of your money on something else, like food or charity.