what is the Probability of getting H1 visa

Hi,

My dad is 56 year old. He is in the field of semiconductor hardware testing training

What is his probability of getting H1 Visa. Is there any site which gives agewise analysis of H1 visa application and their sucess rate

Thanks

H1 has a random selection aka lottery. So, it’s all luck first

Minimum eligibility of H1 is to have a 4 year university degree or 12 years of experience. I think your father must satisfy the requirements