If a company fundraises on Republic via Crowd SAFE or convertible note, unless and until the Crowd SAFE or the note is converted into an equity stake, you will have no information or voting right as an investor in the company.
If and when you receive voting shares in a company, your voting rights will likely be diluted when the company raises additional funds.
Many companies on Republic raise using instruments that can never grant voting rights, such as the Token DPA, Crowd SDA and Crowd TPA. Read more about each instrument and the Form C of each company you are interested in investing in.