execute if score timer_t b matches 1..99999 run scoreboard players remove timer_t b 1
# execute if score timer_t b matches 1..99999 run scoreboard players add timer_t b 1

# h:mm:ss:ff
scoreboard players operation timer_f b = timer_t b
scoreboard players operation timer_f b %= num10 b

scoreboard players operation timer_s b = timer_t b
scoreboard players operation timer_s b /= num10 b
scoreboard players operation timer_s b %= num60 b

scoreboard players operation timer_s1 b = timer_t b
scoreboard players operation timer_s1 b /= num10 b
scoreboard players operation timer_s1 b %= num10 b

scoreboard players operation timer_m b = timer_t b
scoreboard players operation timer_m b /= num600 b
scoreboard players operation timer_m b %= num60 b

titleraw @a actionbar {"rawtext":[{"text":"§l時間§e"},{"score":{"name":"timer_m","objective":"b"}},{"text":":"},{"score":{"name":"timer_s","objective":"b"}}]}

execute if score timer_t b matches 1 run function xxxx/xxxx