"have a wealth of experience" is a correct and usable phrase in written English. You can use this phrase to refer to someone who has a lot of knowledge and skill in a certain field. For example, "With 20 years in the medical field, she has a wealth of experience."
But most have a wealth of experience.
Team GB have a wealth of experience in their eventing team this summer.
"Labour party members have a wealth of experience in the NHS and social care.
Public transportation is good, and social service agencies have a wealth of experience with recent immigrants.
"They have a wealth of experience and know what raising a family and managing a home is like".
"To a certain degree, it's different than a younger person because younger people don't have a wealth of experience to draw upon.
Eventually, the group increases until 32 strangers suddenly have a wealth of experiences to bond over.
She has a wealth of experience.
He has a wealth of experience.
Someone like Peter Hain, who has a wealth of experience of life".
Europe has a wealth of experience in helping to reform former totalitarian states.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK