2 y/o has Covid

So my kids daycare closed because kids had Covid and they can come back on Friday if test is negative. Well I just got results back and he’s positive. There’s no fever he’s still drinking , playing like a regular kid who isn’t sick . . Where do I go from here ? How do I “make it go away” or is it just a waiting game . I have a 4 y/o in the house also her results didn’t come back yet but she’s still normal acting also . Do I make them both wear mask why in the house. I was planning on going grocery shopping today also , I’m almost 1 hr away from family . All my family works . My grandma can’t be around anyone who has Covid or had Covid . I’m a single mom who was already struggling literally living paycheck to paycheck and the only thing that has been helping was the child tax credit . I can never catch a fucking break . So do I just not get groceries or take them with me and put a mask on them