How can I get a service tax code to file my taxes now

Service codes are issued by customer support for very specific reasons.   And...you cannot file a 2024 return now.  E-filing has not even opened yet.   E-filing is permanently closed for past tax years, and will not open for 2024 returns until sometime in January.

https://ttlc.intuit.com/community/charges-and-fees/help/what-is-a-service-code/00/25646

Or—-Use this IRS site for other ways to file for free.  There are 8  free software versions available from the IRS Free File site

https://apps.irs.gov/app/freeFile/

Or—if you live in certain states you may be eligible to use the new IRS Direct File

In Filing Season 2025, Direct File will be available in Alaska, Arizona, California, Connecticut, Florida, Idaho, Kansas, Maine, Maryland, Massachusetts, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Oregon, Pennsylvania, South Dakota, Tennessee, Texas, Washington, Wisconsin, and Wyoming. 

https://directfile.irs.gov/

https://home.treasury.gov/news/press-releases/jy2629