Using the SPLIT () function in Tableau

https://www.rigordatasolutions.com/post/using-the-split-function-in-tableau 

Syntax for using SPLIT() in a calculated field (where delimiter is a space):

SPLIT([column name], ' ',  1)

Notes:

2nd parameter is the delimiter (space in this case)

3rd parameter is the parsed token number; positive is left to right (e.g. 1, 2, etc.), negative is right to left (e.g. -1, -2, etc.)