what profession of science pays the highest?

For biology - a consulting or senior industry position would probably pay the most one you are senior enough. Also, of course physicians are paid well.
An added suggestion is that usually science is not a high paying field, so if money is priority number 1 then you should consider other fields too before taking a final decision.

Glassdoor.com should help you out. I am a scientist by education so my caution would be that if you want to be highly paid somehow tie yourself to a software/computer hardware related field. Currently, cyber security is one of the largest expenditures organizations make. It has been my experience that organizations are paying MUCH more to protect data than they pay to generate it in the first place. For example, a scientist with ~5 years of experience may make ~$60,000 while an equivalently skilled cyber security professional will make ~$90,000. Given the general thoughts of senior leaders, current questions seem to be - what research data is not worth the cost of protecting? Because the cost of cyber security is projected to continue to rise, alternatives include to generate less data (e.g., increase the quality of the data that is generated so that less is needed) and/or lower the cost of generating the data (e.g., pay scientist less). Go into science only if you love it. Choose another field if you seek money - but long term money is unlikely to make you happy.