Just chatted with another member about this. My answer…
12!
9 are enabled, 3 I turn on and off and am still testing.
I run several MAs, an EMA crossover strategy based on the best thread here, price action, market structure, some ICT principles, a couple of different volume indicators, buyers v sellers, MACD, and SMC.
Wow, that’s a lot. It works for me. And you?
Interesting - what do they measure/display the volume of? What are you trading???
This is all that matters, really? 
I use an indicator.
It’s a long, slow SMA.
I take long entries only when whole price bars are above it and it’s rising, and short entries only when whole price bars are below it and it’s falling.
It works for me, as the saying goes. 
I tried using a faster one instead, and an EMA instead, and a WMA instead, and all this kind of thing, but discovered that I get significantly better results when it lags more, so I’ve switched back to the slower SMA, now.
zero unless you count the tick volume that I don’t know how to turn off as an indicator.
I have 2 bots that trade using one indicator, maybe you count it as 2 since it’s an indicator with 2 lines. It’s based off the VHP indicator that I’m sure you’re familiar with.
My manual trading is done based on market structure and price action that I prefer on a clean chart. The addition I will be adding is a box to contain the overnight range and make it easier to identify where price is likely to go early on in the session.
Other bots use breakout and retracements using price action. One of these is working badly with the volatile market, the others are doing great.