This very much depends. At the beginning of a new branch, when quite a few bugs are fixed, this takes often just a couple of days, but when it is getting closer to the end of a branch this can take quite a while.
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Provide your LS version and where it is installed (own server, uni/employer, SaaS hosting, etc.).
Always provide a LSS file (not LSQ or LSG).
Note: I answer at this forum in my spare time, I'm not a LimeSurvey GmbH employee.