A general rule is small businesses with revenues less than $5 million should spend 7-8% of their revenues on marketing.[i] Also consider if your business depends on having many customers (such as a dispensary or delivery service) or a few steady contracts (such as a cultivator or transporter). This can help you determine how much you should spend on advertising and what type of advertising.
[i] “Marketing.” Small Business Administration, n.d. https://www.sba.gov/taxonomy/term/15051?page=37