I didn't find anything for this season, but the Boston Celtics were 21-18 with Kemba Walker in 2020-21.

what is the celtics record when kemba walker and jayson tatum plays this year
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TEAMSEASONGPRECW%MPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF
Boston CelticsBoston Celtics2020-213921-18.538241.3113.043.623.87.15.013.041.588.147.114.337.737.915.720.078.69,4104,4071,701930276195507761