You'll get 10k by default each day (you don't even have to click on the map to go to work) and you'll get flooded with even more throughout either the FemMC+Salim branch (both "AddWife NTR on" and "noAddWife NTR on Cuck" routes) and the Sissy route's main branch.
Buying the electronic store right away gives you a bit of additional passive income and buying a company is needed for some branches to progress, so nothing wrong with it.
But at the end of the day, money has absolutly no meaning in the game, you don't need it for anything and not paying the MC's debt doesn't end the game.
If you're interested in the wife having to work for Salim at his strip club you better not pay the debt to begin with, but if you don't care about that content you can also click the "End Content" button for the "Salim and the Debt" and Wife+Salim branches if you don't want to get bothered with their messages.
