The statement "If A, then B" can best be described as a conditional statement. where A is the antecedent (the "if" part) and B is the consequent (the "then" part).
In this conditional statement:
A represents a condition or event.
B represents the result or outcome that follows if condition A is satisfied.
The statement asserts that if the condition A is true, then the result B will also be true. If A is false or not satisfied, the statement doesn't make any claim about B.