For example, if you were using a comma:
START=0
COMMA=INSTR(START,GAMESAVE$,",")
HP$=MID$(GAMESAVE$,START,COMMA-START)
START=COMMA+1
COMMA=INSTR(START,GAMESAVE$,",")
SP$=MID$(GAMESAVE$,START,COMMA-START)
To illustrate, I assumed you put a comma after the final value. Otherwise you would need to use COMMA=LEN(GAMESAVE$) for the last one.
2そうだね プレイ済み