About the same amount as after any other activities. You are far more at risk from bacteria, greases, resins, and any number of other things than from the lead.
Lead fear, like radioactivity fear is promulgated by folks who have no idea what numbers are, or how to use them. Since they don't have this tool the choices become binary. It is either good, or bad. Lead which is bad when put into the air by the ton as a byproduct of combusting leaded gasoline, or in paint which might be a problem for anyone who actually eats the paint gets translated into "Lead is bad".