I have part-year job with W-2 and sole prop income/expenses other part of year. No 1099-Misc.. How to enter SE income?

You still report it on Schedule C, even if you don't have Form 1099-MISC.  You use your own records to determine your total income and report it as 'cash'. 

See the information below to get started.

https://ttlc.intuit.com/replies/4801198