In Jira, story points are implemented via a custom field called "Story Points". You can sync JIRA Story Points field as a simple text field.
Important: Make sure that you have Story Points field on both sides.
Warning: Despite our best efforts, code can change without notice due to a variety of factors. If you encounter an issue in any of the code shown here and find that a specific block of code is not correct, or is causing errors, please check with the Community to find an updated version.
Source side
Add the code below into the Outgoing sync to send Story Points field data
Data Filter
1 replica.customFields."Story Points" = issue.customFields."Story Points"
Destination side
Incoming sync
add synced Story Points field data
1 issue.customFields."Story Points".value = replica.customFields."Story Points".value