You have to buy tutors hit your farm (if you have one) and repeat this until the money you make from your farm stops increasing. Then look at your TB add strength and intel. together and you will have your Mac TB
There is no such thing as max tb. There is max plunder if that is what you're referring to. It is determined by the formula below. 15 million times your combined stats = the amount of money you need to have invested in tutors to reach your max plunder. Hope this helps.
You need a max of 4.5b in tuts. Kcs x 15 Although its always best to have more so when you ug, you dont need to hire more,