Well what if someone uses electrum and has btc but they are spread out in different addresses? So wouldn't that mean someone with say 200 btc could have 100 in one and 2 in another etc?
Correct (except for the part that 200 =100+2). As I stated before, there is no general way to know which addresses belong to a single individual or entity, and therefore the OPs question is not resoluble except for declared personal cases (which, in sum, will not be representative of the global amount of people que OP’s query wanted to know). That’s why I proposed the above table as an alternative approach, which varied the OP’s question, but that does have objective global data associated to it: the number of addresses at a given point in time that hold a certain range of BTCs. To add perspective, I added some historical snapshot data.
So the current btc at the moment. There is btc in over 20 million btc addresses at the current moment? So half of the current btc in an address now has 0.001 btc and less?
Accordind to the data shown at
https://bitinfocharts.com/top-100-richest-bitcoin-addresses.html, there are 20,8M BTC addresses currently (*) ; 48,6% of which hold more than 0 BTCs less than 0.001 BTCs.
(*) The cero interval is an open interval, and therefore, addresses with 0 BTCs are not accounted (meaning that there are more addresses than the 20,8M BTCs, but without balance).
Why is the 10-100 btc bolded though compared to the other ones?
I highlighted that line simply because it was the range that included (not equal) the interval the OP wanted to query about, with all the fine print stated above.