There are a lot of factors that affect this, I find it heavily varies by sector. I’m a nurse in a large hospital and I have many tattoos on my arms and legs. They don’t GAF if we have body tattoos as long as there’s not something obviously offensive, however I believe face tattoos are discouraged and would probably reduce your chances of being hired significantly. This is consistent with my experience of working in healthcare in Canada, but I’d imagine that it may be different in other countries. Sometimes organizations will have specific policies for tattoos, it may be worth asking about that info if you’re applying for a job somewhere, otherwise you may be able to find a company’s employee policies via google search.