Phil needs money for his day off, and for two bills that are due after his day off. (If you're doing illegal math, you'll realize that is $600 for his day off, and probably $600 for those two bills)
He says the one bill may come out on Thursday, but it varies every month. Why does it vary every month? Hard to say, but there's a good possibility Phil either doesn't actually know the day it comes out because he doesn't properly track his budget, or he is unsure what days he previously claimed these bills hit in previous months, and is trying to give himself some wiggle room so he can beg wherever he wants to.
Also keep in mind that as of 5 days ago, Phil had used all of his YT paycheck and his tips to pay off all of his bills (but only for last month!). This resulted in Phil spending $7000 ($5.5k from YT, and $1.5k from 10 days of tips). Where did the last 5 days of tips go, given that Phil has not left the house and all of his bills had been paid? Where did the $350 from Patreon go? Umm... hm.
Seem to be some issues with this math...