Black drivers are stopped by police, on average, 20% more often than white drivers:
Study of 100 million police stops finds black motorists are more likely to be pulled over - CNN
Many retailers have policies that discriminate against black customers, and there are further a number of instances of employees discriminating:
Shopping While Black: Applying the Civil Rights Act of 1866 to Cases of Consumer Racial Profiling - Human Services Today University of Wisconsin Oshkosh
Bus drivers will give white riders a free ride more often than black riders:
https://www.washingtonpost.com/news...re-likely-to-let-white-passengers-skip-fares/
Doctors don't believe it when black people complain of pain as compared to white people:
Racial bias in pain assessment and treatment recommendations, and false beliefs about biological differences between blacks and whites
Black people are handled in discriminatory fashion at all levels of the health care system, even controlling for socio-economic factors like income geographic location:
Racism and Health: Evidence and Needed Research
If you have a black-sounding name, it'll be half again as hard to get a job interview:
https://www.nber.org/digest/sep03/w9873.html
Black people are typically quoted higher prices for cars than white people:
https://www.jstor.org/stable/2118176?seq=1
Black neighborhoods are policed more and suspects are reported with bias against blacks (in other words, the refrain that black people commit more crime is at least partially due to a bias in how crimes are reported):
https://www.jstor.org/stable/10.1086/322810?seq=1
Judges sentence black defendants more harshly than white defendants for the same crimes, even when both black and white defendants have similar backgrounds:
http://projects.heraldtribune.com/bias/sentencing/
When police have discretion whether to charge a suspect with a more or less serious offense, they charge black people with the serious offense more often:
https://onlinelibrary.wiley.com/doi/abs/10.1111/jels.12201
Real estate agents consistently and persistently "steer" non-white home buyers toward high-crime, high-pollution neighborhoods:
https://www.nber.org/papers/w24826
And the evidence goes on and on and on. There are literally tens of thousands of such studies available to anyone with access to a decent academic library. What all of this shows is that black people regularly face significant headwinds in practically all aspects of life.
This does not mean that there aren't struggling white people. It does not mean that there aren't white people who are treated unfairly by health care workers, police, judges, bosses, real estate agents, city workers, etc. It does not mean that there aren't some successful black or brown people, even ones more successful than some white people.
What the term "white privilege" refers to is the theory, supported by the studies linked above as well as by those tens of thousands I didn't link (but you, dear reader, can find for yourself), that, on average, brown and black people will do worse than white people in the same situation. That is what white privilege is, and what it means.