1) If there is someone who prayed namaz juma furada without knowing when he was young and he doesn’t know if he was baligh or not

2) In Wudhoo is it ok if after washing my face I take a towel and wipe my head before moving to wash my hand and wiping head and feet? Is it okay if the towel or hand is a little wet

1) No problem
2) Yes Your wudu is fine