How to check if an iPhone six has been jailbroken

what does this stuff mean then

timestamp: 1603029530041

crashReporterKey: "80ed100498ff05665628a78abf9f9266e9db5d23"

isAnonymous: true

deviceConfigId: 5589

investigationId: 0

model: "iPhone8,1"

softwareBuild: "17C54"

firmwareVersion: "iBoot-5540.60.11"

basebandVersion: "7.30.02"

buildtype: "User"

tz_offset: -14400

metric_file_type: 1

{"timestamp":"2020-10-19 20:00:05.95 -0400","bug_type":"211","os_version":"iPhone OS 13.3

{"crashreporter_key":"159d3db2f283689aff6ca4c8dc0d50070dea80da","bug_type":"211","timestamp":"2020-10-19 20:00:05.81

the update it’s telling me is available is iOS 14.1

apple.llc

2.24 gb

to learn more it says visit this web site

https://support.apple.com/kb/HT201222

is this the update I need

Not jibbers you me I understand some of it I’m just curious why it’s on my phone