  The gamma-ray blazar TXS 0506+056 was found with an enhanced gamma-ray
emission state in spatial and temporal coincidence with the IceCube high energy
neutrino event IC170922A. This is the most significant association by far
between a high-energy neutrino event and a blazar in a flaring state. Studying
the time evolution and spectral behavior of the blazar emission may help in
identifying the sources of the diffuse neutrino flux observed by IceCube and
the origin of energetic cosmic rays. TXS 0506+056 was detected by the VERITAS
gamma-ray observatory with a significance of 5.8 standard deviations above 110
GeV in a 35 hour data set collected between September 23, 2017 and February 6,
2018. Here we will present results from recent VERITAS observations and an
associated multiwavelength campaign, collected between October 10, 2018 to
March 1, 2021. A relatively quiet very high energy gamma-ray emission state was
observed during this time period, and flux upper limits are used to constrain
the potential variability of this blazar.
