  We try to constraints some of the nuclear matter parameters such as symmetry
energy ($J$) and its slope ($L$) from the recent inferred data of the PREX-2.
Other nuclear matter parameters are adopted from {\bf [Phys. Rev. C 85 035201
(2012), Phys. Rev. C 90 055203 (2014)]} papers and the linear correlation among
them are checked by using the Pearson's formula. We find the correlation
between $J-L$, $K_\tau-J$ and $K_\tau-L$ with coefficients 0.85, 0.81 and 0.76
respectively. The neutron star properties such as mass and radius are
calculated with 50 unified equation of states. The results are consistent with
recently observed pulsars and NICER data except few exceptions. From the radii
constraints, we find that the new NICER data allows a narrow radius range
contrary to a large range of PREX-2 and the old NICER data leaving us an
inconclusive determination of the neutron star radius.
