How much playtime is required to be a pro?

Playtime of pubg

5 hours per day

You just need good aim and play with you brain.

haha exactly that ☝

500 hours playing

I've been playing semi-profesionally, and had a little over 3k hours when I quit. That's around 6 months ago. By now, most of the pro's in the game have around 6-7k (if not more) hours, and 80% of it is competitive gameplay (scrims vs. other pros, tournaments, etc).