Medicine

How much clinical work experience would you recommend getting in person and work experience as a whole for medicine applicants?

You do not actually need any.
Yes. Read that again. You need never set foot in a genuinely clinical environment- Universities know that it is very difficult to secure work experience. I've been told some places have waiting lists months or years into the future.
What you do need, however, is some experience of patient/customer facing roles, and ideally some experience of care itself. Care homes, volunteer organisations, community hospitals, community nurses all this kind of thing. I spent a great deal of time in a number of places all arranged by my local community hospital. I spent time with the district nurses, podiatrists, diabetic nurses, radiographer, physiotherapists and occupational therapists, pharmacists. This was all very, very useful. I also spent time working with homelessness/social care type charities. I would like to have had some experience of youth and disability volunteer work but I didn't secure it in time before applying.
Think about what interests you, what might be useful in future as a medical student or doctor and make sure you keep a detailed diary of everywhere you go and what you do and reflect heavily on what you learnt before you sit your med school interviews.