>>413694061. if you have lots of money you can buy vitamins in wyndon city, if you have lots of bp you can buy vitamins in hammerlocke, and otherwise just chain mons with macho brace and pokerus
2. after beating leon for the first time in the battle tower you gain access to it in PC like in gen 7
3. Feeding dynamax candies you get from raids to any pokemon will raise they dynamax level, which increases the hp they gain when dynamaxing
Grrokey's are done btw