Jump to next white space

• Use f and then space. See :help f and :help t for that.
• Alternatively use /[[:space:]] or /\s if you want to also match tab.
• otherwise El will do it (capital e and lowercase L).

Following a suggested edit that was rejected, here is how to do it backwards (jump to previous space):

• Use F and then space. See :help F and :help T for that.
• Alternatively use ?[[:space:]] or ?\s if you want to also match tab.
• otherwise Bh will do it (capital b and lowercase h).

On the same line :

fSpace will work.

Generally, f+<char> allows you to jump on the next character on the same line.

See :help f for more information.