  Black holes provide a natural laboratory to study particle physics and
astrophysics. When black holes are surrounded by matter fields, there will be
plenty of phenomena which can have observational consequences, from which we
can learn about the matter fields as well as black hole spacetime. In this
work, we investigate the massive scalar field in the vicinity of a newly
proposed rotating regular black hole inspired by quantum gravity. We will
especially investigate how this non-singular spactime will affect the
superradiance instability and quasinormal modes of the scalar filed. We derive
the superradiant conditions and the amplification factor by using the
Matching-asymptotic Method, and the quasinormal modes are computed through
Continued Fraction Method. In the Kerr limit, the results are in excellent
agreements with previous research. We also demonstrate how the quasinormal
modes will change as a function of black hole spin, regularity described by a
parameter $k$ and scalar field mass respectively, with other parameters taking
specific values.
